John Hancock(1737—1793)是美国独立战争时期一位政治家,现在口语中常用来表示“亲笔签名”。据说在1776年北美大陆会议讨论《独立宣言》时,约翰·汉考克担任大会主席,在《独立宣言》签字时,约翰·汉考克首先在宣言上签下了自...John Hancock(1737—1793)是美国独立战争时期一位政治家,现在口语中常用来表示“亲笔签名”。据说在1776年北美大陆会议讨论《独立宣言》时,约翰·汉考克担任大会主席,在《独立宣言》签字时,约翰·汉考克首先在宣言上签下了自己的大名,他的签名比宣言起草人杰斐逊和著名政治家富兰克林的签名还要大,过后有人问他为什么要签那么大的字,他风趣地说:“展开更多
奥尼尔是谁?他是大鲨鱼,将奥登一顿暴打之后,高傲的冲着电视镜头大喊如果有下一个沙克,那一定是我的儿子,奥登、拜纳姆他们还差得远呢他是大喜剧,在纽约的夜店里扭着屁股怪声怪调地唱:Kobe Tell me how my ass taste然后又郑重其事地表...奥尼尔是谁?他是大鲨鱼,将奥登一顿暴打之后,高傲的冲着电视镜头大喊如果有下一个沙克,那一定是我的儿子,奥登、拜纳姆他们还差得远呢他是大喜剧,在纽约的夜店里扭着屁股怪声怪调地唱:Kobe Tell me how my ass taste然后又郑重其事地表态和科比的所谓冲突只是一个笑话,全是菲尔·杰克逊挑拨的他是大问号,赛季还没开打就一副尚能饭否的悲情模样,公开盘算着还有几天退役,还没等我们回过味来他又壮士暮年雄心不减地表态,735天后不会撂挑子不干。展开更多
A two-dimensional （2D） dam-break flow numerical model was developed based on the finite-volume total variation diminishing （TVD） and monotone upstream-centered scheme for conservation laws （MUSCL）-Hancock scheme...A two-dimensional （2D） dam-break flow numerical model was developed based on the finite-volume total variation diminishing （TVD） and monotone upstream-centered scheme for conservation laws （MUSCL）-Hancock scheme, which has second-order accuracy in both time and space. A Harten-Lax-van Leer-contact （HLLC） approximate Riemann solver was used to evaluate fluxes. The TVD MUSCL-Hancock numerical scheme utilizes slope limiters, such as the minmod, double minmod, superbee, van Albada, and van Leer limiters, to prevent spurious oscillations and maintain monotonicity near discontinuities. A comparative study of the impact of various slope limiters on the accuracy of the numerical flow model was conducted with several dam-break examples including wet and dry bed cases. The numerical results of the superbee and double minmod limiters agree better with the theoretical solution and have higher accuracy than other limiters in one-dimensional （1D） space. The ratio of the downstream water depth to the upstream water depth was used to select the proper slope limiter. For the 2D numerical model, the superbee limiter should not be used, owing to significant numerical dispersion.展开更多
两个事物之间,可能存在各种不同的关系。我们把所有者(possesor)与被所有者(pos-sessed item)之间的关系称为“所有关系(posses-sion)”。Todd 和 Hancock(P.358)指出,在英语中,主要用四种方式表示所有关系。首先,可以使用-s 属格形式,...两个事物之间,可能存在各种不同的关系。我们把所有者(possesor)与被所有者(pos-sessed item)之间的关系称为“所有关系(posses-sion)”。Todd 和 Hancock(P.358)指出,在英语中,主要用四种方式表示所有关系。首先,可以使用-s 属格形式,如 the young girl’s par-ents。其次,可以使用由 of 引导的介词词组,如 the six wives of Henry ⅤⅢ。第三,可以使用名词修饰语,如 the table leg(意为 the leg of atable)。第四,可以使用 have,get,possess展开更多
In June 1775,a few weeks after the skirmish at Lexington and Concord,John Adams got up in the ContinentalCongress meeting in Philadelphia,to nominate a Commander-in-chief for the Continental forces.John Hancock,who as...In June 1775,a few weeks after the skirmish at Lexington and Concord,John Adams got up in the ContinentalCongress meeting in Philadelphia,to nominate a Commander-in-chief for the Continental forces.John Hancock,who as president of Congress was in the chair,thought that Adams intended to name him, so he listened withmounting satisfaction as Adams outlined the superior qualifications needed by the new commander.“Gentle-men,”exclaimed Adams finally,“I know these qualifications are high,but we all know they are needful in thiscrisis in this chief.Does anyone say they are not to be obtained in this country?In reply,I have to say they are:展开更多
On the day of our final exam at Alan Hancock Community College(社区学院)in Santa Maria,Calif(加利福尼亚),we heard that the book store hadchanged its policy and would buy back our business-management(企业管理)textbooks...On the day of our final exam at Alan Hancock Community College(社区学院)in Santa Maria,Calif(加利福尼亚),we heard that the book store hadchanged its policy and would buy back our business-management(企业管理)textbooks,Before class,several of us dashed(冲向)over to the store and soldour books.展开更多
文摘奥尼尔是谁?他是大鲨鱼,将奥登一顿暴打之后,高傲的冲着电视镜头大喊如果有下一个沙克,那一定是我的儿子,奥登、拜纳姆他们还差得远呢他是大喜剧,在纽约的夜店里扭着屁股怪声怪调地唱:Kobe Tell me how my ass taste然后又郑重其事地表态和科比的所谓冲突只是一个笑话,全是菲尔·杰克逊挑拨的他是大问号,赛季还没开打就一副尚能饭否的悲情模样,公开盘算着还有几天退役,还没等我们回过味来他又壮士暮年雄心不减地表态,735天后不会撂挑子不干。
基金supported by the National Natural Science Foundation of China(Grants No.51679170,51379157,and 51439007)
文摘A two-dimensional （2D） dam-break flow numerical model was developed based on the finite-volume total variation diminishing （TVD） and monotone upstream-centered scheme for conservation laws （MUSCL）-Hancock scheme, which has second-order accuracy in both time and space. A Harten-Lax-van Leer-contact （HLLC） approximate Riemann solver was used to evaluate fluxes. The TVD MUSCL-Hancock numerical scheme utilizes slope limiters, such as the minmod, double minmod, superbee, van Albada, and van Leer limiters, to prevent spurious oscillations and maintain monotonicity near discontinuities. A comparative study of the impact of various slope limiters on the accuracy of the numerical flow model was conducted with several dam-break examples including wet and dry bed cases. The numerical results of the superbee and double minmod limiters agree better with the theoretical solution and have higher accuracy than other limiters in one-dimensional （1D） space. The ratio of the downstream water depth to the upstream water depth was used to select the proper slope limiter. For the 2D numerical model, the superbee limiter should not be used, owing to significant numerical dispersion.
文摘两个事物之间,可能存在各种不同的关系。我们把所有者(possesor)与被所有者(pos-sessed item)之间的关系称为“所有关系(posses-sion)”。Todd 和 Hancock(P.358)指出,在英语中,主要用四种方式表示所有关系。首先,可以使用-s 属格形式,如 the young girl’s par-ents。其次,可以使用由 of 引导的介词词组,如 the six wives of Henry ⅤⅢ。第三,可以使用名词修饰语,如 the table leg(意为 the leg of atable)。第四,可以使用 have,get,possess
文摘In June 1775,a few weeks after the skirmish at Lexington and Concord,John Adams got up in the ContinentalCongress meeting in Philadelphia,to nominate a Commander-in-chief for the Continental forces.John Hancock,who as president of Congress was in the chair,thought that Adams intended to name him, so he listened withmounting satisfaction as Adams outlined the superior qualifications needed by the new commander.“Gentle-men,”exclaimed Adams finally,“I know these qualifications are high,but we all know they are needful in thiscrisis in this chief.Does anyone say they are not to be obtained in this country?In reply,I have to say they are:
文摘On the day of our final exam at Alan Hancock Community College(社区学院)in Santa Maria,Calif(加利福尼亚),we heard that the book store hadchanged its policy and would buy back our business-management(企业管理)textbooks,Before class,several of us dashed(冲向)over to the store and soldour books.
