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地面阻隔高强度林火的方法 被引量:1
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作者 朴金波 穆绍禹 孙景宇 《森林防火》 2009年第2期40-42,共3页
针对直接扑救高强度森林火灾十分困难且容易造成人员伤亡的现实,阐述了利用自然依托,手工具开设阻火线,利用森林灭火索开设阻火线,利用推土机开设隔离带,利用森林消防车进行阻隔等安全而有效的高强度林火扑救方法。
关键词 高强度火 阻隔技术 隔离带
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试析森林消防装备的种类及使用技术 被引量:7
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作者 杜建华 《森林防火》 2012年第1期34-35,共2页
叙述了防火推土机、越野森林消防车、森林消防指挥车等大型森林消防设备的结构和性能。着重阐述了这些设备在扑灭高强度森林火灾或者控制大面积森林火灾发生时的独特功能,使用技术和显著效果。
关键词 高强度火 大型森林消防设备 推土机 越野森林消防车 森林消防指挥车
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Analysis and Improvement of Automotive High Intensity Discharge Lamp Ballast Based on Microcontroller Unit
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作者 CUI Jia, WANG Jian-ming(School of Information and Communication Engineering, Tianjin Polytechnic University, Tianjin 300160, CHN) 《Semiconductor Photonics and Technology》 CAS 2008年第2期131-135,共5页
The superior performance of high intensity discharge(HID) headlamp is clearly shown for luxury sedans, and the lamp luminescence properties are analyzed. The principle of its ballast technology is analyzed in detail... The superior performance of high intensity discharge(HID) headlamp is clearly shown for luxury sedans, and the lamp luminescence properties are analyzed. The principle of its ballast technology is analyzed in detail. For against the disadvantage of current ballast technology for sedans lamp, a novel type of electronic ballast for HID is designed based on programmable intelligent computer(PIC) microcontroller unit(MCU) and S1A2410M inverter and it provides guidance and can be easily used in control configuration selection and design. The feasibility and superiority of the system are proved. 展开更多
关键词 HID IGNITER BALLAST TRANSFORMER MCU
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Austenite/martensite structure and corresponding ultrahigh strength and high ductility of steels processed by Q&P techniques 被引量:5
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作者 WANG CunYu ZHANG YuJie +3 位作者 CAO WenQuan SHI Jie WANG MaoQiu DONG Han 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第7期1844-1851,共8页
The microstructure of steels treated by Q&P(quenching and partitioning) process was characterized,a method of controlling retained austenite fraction based on inhomogeneous martensitic transformation was proposed,... The microstructure of steels treated by Q&P(quenching and partitioning) process was characterized,a method of controlling retained austenite fraction based on inhomogeneous martensitic transformation was proposed,and the mechanical properties of steels treated by Q&P process were measured.The results show that the microstructure of the studied steels is mainly composed of initial martensite,fresh martensite and retained austenite.The initial marteniste formed at the first quenching step is easily etched;the fresh martensite formed at the final quenching step looks like 'blocky' type phase,and the retained austenite is mainly located on the packet boundary and initial austenite grain boundary.The inhomogeneous microstructure causes the experimental optimum quenching temperature corresponding to maximum retained austenite fraction to be higher than the calculation based on CPE(constrained paraequilibrium) model.The product of tensile strength and total tensile elongation is 47.5 GPa%,and tensile strength of 1760 MPa was obtained for the steel with carbon content of 0.51 wt%.The TRIP(transformation induced plasticity) effects of the large fractioned metastable austenite make a main contribution to the high ductility improvement,and the martensitic matrix provides high strength. 展开更多
关键词 MARTENSITE retained austenite Q&P ultrahigh strength steel ductility heat treatment
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