Based on the CINRAD/SA user manual and the American WSR-88D technical guide,the working principle,parameters,debugging preparation,debugging process and debugging methods of rectification and capacitance components of...Based on the CINRAD/SA user manual and the American WSR-88D technical guide,the working principle,parameters,debugging preparation,debugging process and debugging methods of rectification and capacitance components of Doppler radar were analyzed in detail,and the main trouble reasons were also introduced.展开更多
贵刊1995年第2期 p.61《take trouble to do sth 不妥》,读后颇受启发。但在否定 take trouble to do sth 这种错误表达法的同时,又感到 take thetrouble to do sth。这种正确表达法也非唯一。“不妥”一文称“take trouble 后面如果接...贵刊1995年第2期 p.61《take trouble to do sth 不妥》,读后颇受启发。但在否定 take trouble to do sth 这种错误表达法的同时,又感到 take thetrouble to do sth。这种正确表达法也非唯一。“不妥”一文称“take trouble 后面如果接动词不定式时则必须在 take 与 trouble 之间加上 the”,可能会使人误会成唯一的正确表达法,其实除了加 the 之外,还可以添加 the 以外的许多限定词或形容词,如:展开更多
贵刊1994年第6期.p.54“答案及简析”14中提到 take trouble to dosomething 这种表达法.笔者认为不妥.理由如下。take trouble 是“不辞劳苦,费心,费力”的意思。例如:He dislikes to take trouble.他怕麻烦。take trouble 里无“the”...贵刊1994年第6期.p.54“答案及简析”14中提到 take trouble to dosomething 这种表达法.笔者认为不妥.理由如下。take trouble 是“不辞劳苦,费心,费力”的意思。例如:He dislikes to take trouble.他怕麻烦。take trouble 里无“the”,后面通常接介词 over,写作 take trouble展开更多
Fernando has an awful problem,but at last he’s going tosee if he can get to the root of the trouble.Fernando is smartfor ‘the root’ here means the source,the reason,or the causeof trouble.“Ah,here’s the root of t...Fernando has an awful problem,but at last he’s going tosee if he can get to the root of the trouble.Fernando is smartfor ‘the root’ here means the source,the reason,or the causeof trouble.“Ah,here’s the root of the trouble.”Dr.展开更多
Hospital Gunshots On the morning of April 17,2016,in front of the People’s Hospital of Linying County of Henan Province,a number of relatives of a dead child cried incessantly,hung banners and posted the child’s pho...Hospital Gunshots On the morning of April 17,2016,in front of the People’s Hospital of Linying County of Henan Province,a number of relatives of a dead child cried incessantly,hung banners and posted the child’s photos in front of the hospital.展开更多
A businessman unsuccessfully tried to collect a bill from one of hiscustomers. Desperate, he finally sent him a picture of his little daughterand wrote 'Tthis is the reason why I need the money so urgently.'
This paper presents four patterns of reference-return positions for CNC machine tools and analyses some causes of return reference troubles by showing typical examples of trouble shooting.Finally,it introduces several...This paper presents four patterns of reference-return positions for CNC machine tools and analyses some causes of return reference troubles by showing typical examples of trouble shooting.Finally,it introduces several methods of trouble shooting.展开更多
Background President Obama will soon be required to decide whether to impose quotas or other restrictions against imports of passenger and light truck tires from China.
Mr Day was a teacher at a school in a bigcity in the north of England.He usually went toFrance or Germany for a few weeks during hissummer holidays,and he spoke French andGerman quite well. But one day Mr Day said to ...Mr Day was a teacher at a school in a bigcity in the north of England.He usually went toFrance or Germany for a few weeks during hissummer holidays,and he spoke French andGerman quite well. But one day Mr Day said to one of hisfriends,“I'm going to have a holiday in展开更多
Ethiopia’s giant GibeⅢDam runs into controversy ETHIOPIA and Kenya have one thing in common: they both produce world-class long-distance athletes. But aside from the athletics track,the two Eastern Africa countries,...Ethiopia’s giant GibeⅢDam runs into controversy ETHIOPIA and Kenya have one thing in common: they both produce world-class long-distance athletes. But aside from the athletics track,the two Eastern Africa countries, which border each other, also share the dilemma of power shortage even as they take baby-steps toward the industrialized展开更多
THE Grand Ethiopian Renaissance Dam （GERD） on the Blue Nile. the main headstream of the Nile, could be the largest in Africa once completed by 2017. The figures are impressive - 1.780 meters long and rising up to 14...THE Grand Ethiopian Renaissance Dam （GERD） on the Blue Nile. the main headstream of the Nile, could be the largest in Africa once completed by 2017. The figures are impressive - 1.780 meters long and rising up to 145 meters. The GERD could hold up to 70 billion cubic meters of water in a reservoir of 1.800 square km, When its 16 turbines are powered up, Ethiopian engineers say with planned installed capacity of 6,000 MW. it could produce enough energy to meet the demands of Ethiopia with even some excess to export to neighborin~ Kenya and South Sudan.展开更多
It is very interesting sometimes and necessary 1 another country, but we may get into trouble if we don't know their 2 well. It may be 3 to talk with the people there. We may not know how to
A large number of hydraulic concrete structures have hidden defects such as cracks, erosion, freeze and thaw, thermal fatigue, carbonization. These hidden defects seriously affect the strength, stability and durabilit...A large number of hydraulic concrete structures have hidden defects such as cracks, erosion, freeze and thaw, thermal fatigue, carbonization. These hidden defects seriously affect the strength, stability and durability of structures. These problems are studied mainly by single monitoring or diagnosis methods at present. The integration of multiple monitoring and diagnosis methods is not applied widely. Besides, the analysis theory on these problems is not developed very well. The systemic study on the aging mechanism of hydraulic concrete structures, time- variation model and health diagnosis is still not enough. The support for engineering practice is limited. Aimed at these major scientific and technological problems and combined with specific projects, study on detection of hidden defects and health diagnosis of hydraulic concrete structure has been carried out. This study includes the following content: field non-destructive examination of hidden defects of hydraulic concrete structures, seepage detection, the construction of in-situ sensing system, the combination of field detection and in-situ monitoring, the mechanism of crack, freeze and thaw, erosion and carbonization of hydraulic concrete structure, mechanism of combination aging; time-variation model of hydraulic concrete structure, theories and methods for health diagnosis of hydraulic concrete structures.展开更多
文摘Based on the CINRAD/SA user manual and the American WSR-88D technical guide,the working principle,parameters,debugging preparation,debugging process and debugging methods of rectification and capacitance components of Doppler radar were analyzed in detail,and the main trouble reasons were also introduced.
文摘贵刊1995年第2期 p.61《take trouble to do sth 不妥》,读后颇受启发。但在否定 take trouble to do sth 这种错误表达法的同时,又感到 take thetrouble to do sth。这种正确表达法也非唯一。“不妥”一文称“take trouble 后面如果接动词不定式时则必须在 take 与 trouble 之间加上 the”,可能会使人误会成唯一的正确表达法,其实除了加 the 之外,还可以添加 the 以外的许多限定词或形容词,如:
文摘贵刊1994年第6期.p.54“答案及简析”14中提到 take trouble to dosomething 这种表达法.笔者认为不妥.理由如下。take trouble 是“不辞劳苦,费心,费力”的意思。例如:He dislikes to take trouble.他怕麻烦。take trouble 里无“the”,后面通常接介词 over,写作 take trouble
文摘Fernando has an awful problem,but at last he’s going tosee if he can get to the root of the trouble.Fernando is smartfor ‘the root’ here means the source,the reason,or the causeof trouble.“Ah,here’s the root of the trouble.”Dr.
文摘Hospital Gunshots On the morning of April 17,2016,in front of the People’s Hospital of Linying County of Henan Province,a number of relatives of a dead child cried incessantly,hung banners and posted the child’s photos in front of the hospital.
文摘A businessman unsuccessfully tried to collect a bill from one of hiscustomers. Desperate, he finally sent him a picture of his little daughterand wrote 'Tthis is the reason why I need the money so urgently.'
文摘This paper presents four patterns of reference-return positions for CNC machine tools and analyses some causes of return reference troubles by showing typical examples of trouble shooting.Finally,it introduces several methods of trouble shooting.
文摘Background President Obama will soon be required to decide whether to impose quotas or other restrictions against imports of passenger and light truck tires from China.
文摘Mr Day was a teacher at a school in a bigcity in the north of England.He usually went toFrance or Germany for a few weeks during hissummer holidays,and he spoke French andGerman quite well. But one day Mr Day said to one of hisfriends,“I'm going to have a holiday in
文摘Ethiopia’s giant GibeⅢDam runs into controversy ETHIOPIA and Kenya have one thing in common: they both produce world-class long-distance athletes. But aside from the athletics track,the two Eastern Africa countries, which border each other, also share the dilemma of power shortage even as they take baby-steps toward the industrialized
文摘THE Grand Ethiopian Renaissance Dam （GERD） on the Blue Nile. the main headstream of the Nile, could be the largest in Africa once completed by 2017. The figures are impressive - 1.780 meters long and rising up to 145 meters. The GERD could hold up to 70 billion cubic meters of water in a reservoir of 1.800 square km, When its 16 turbines are powered up, Ethiopian engineers say with planned installed capacity of 6,000 MW. it could produce enough energy to meet the demands of Ethiopia with even some excess to export to neighborin~ Kenya and South Sudan.
文摘It is very interesting sometimes and necessary 1 another country, but we may get into trouble if we don't know their 2 well. It may be 3 to talk with the people there. We may not know how to
基金Supported by the Key Project of Chinese National Programs for Fundamental Research and Development (Grant No. 2002CB412707) Key Project of NNSF and Yalongjiang Hydroelectric Development Joint Research Fund (50539110, 50539030)+2 种基金 Science and Technology Support Plan (20006BAC14B03) National Natural Science Foundation Major Project (50539010)National Natural Science Foundation of China (Grant No. 50579010)
文摘A large number of hydraulic concrete structures have hidden defects such as cracks, erosion, freeze and thaw, thermal fatigue, carbonization. These hidden defects seriously affect the strength, stability and durability of structures. These problems are studied mainly by single monitoring or diagnosis methods at present. The integration of multiple monitoring and diagnosis methods is not applied widely. Besides, the analysis theory on these problems is not developed very well. The systemic study on the aging mechanism of hydraulic concrete structures, time- variation model and health diagnosis is still not enough. The support for engineering practice is limited. Aimed at these major scientific and technological problems and combined with specific projects, study on detection of hidden defects and health diagnosis of hydraulic concrete structure has been carried out. This study includes the following content: field non-destructive examination of hidden defects of hydraulic concrete structures, seepage detection, the construction of in-situ sensing system, the combination of field detection and in-situ monitoring, the mechanism of crack, freeze and thaw, erosion and carbonization of hydraulic concrete structure, mechanism of combination aging; time-variation model of hydraulic concrete structure, theories and methods for health diagnosis of hydraulic concrete structures.
