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高立式沙障是目前半干旱,半湿润沙区普遍采用的固沙造林先行措施和极端干旱沙区的关键防沙措施~([1]).在沙漠公路,铁路,文物古迹等沙害防治中起主要作用,如塔克拉玛干沙... 康向光,李生宇,王海峰,... - 干旱半干旱区域水土保持生态保护论坛论文选编 被引量: 10发表: 2013年 沙柳立式沙障风沙动力学特征及蚀积...
百度试题 题目最适宜的增长力量的练习次数是? A.3-7RMB.15-20RMC.1-3RMD.8-12RM相关知识点: 试题来源: 解析 C 反馈 收藏
Effects of Heat Shrinkage on Structure and Property of Silk/Synthetic Fiber Textured Composite Filaments The textured yarn was respectively prepared with pure silk, silk/polyester POY composite filament, silk/polyester FDY composite filament by the self-made p... XY Zhang,BZ Wang,M Zhang,... -...
南天山冲断褶皱系是中-上新世以来形成的以薄皮滑脱为主的冲断构造,冲断作用导致了盆地内及周缘区古-新生界的碎屑岩和碳酸盐岩地层发主形变。本文对该冲断系前缘区(巴音库鲁提北部至喀什地区)的运动学特征进行了研究。rn 南天山冲断褶皱系从平面上分出了六个冲断褶皱带。从剖面上划分出两种不同的冲断体系。冲...
12月19日,李连杰带19岁大女儿Jane参加巴黎名媛舞会,老父亲显然很为女儿骄傲,高兴得晒出了多张合影照片,满脸笑容超幸福啊!近日已经沉寂了许久的李连杰,偶尔露面似乎都离不开女儿啊,看来老父亲也是要为两个优秀的女儿铺路了。 与大女儿Jane合照,19岁的她从小...
Fluid-based Capacitive Tilt Sensor Measures over 360°with High Precisson Application example: 3D-control for excavating machines Fluid-based Capacitive Tilt Sensor Measures over 360°with High Precisson Application example: 3D-control for excavating machines U Remer - 《Elektor》 被引量: 0发表: 201...
PURPOSE:To improve dielectric strength characteristics of a Schottky barrier rectifier in which a guard ring is provided without degrading forward characteristics by making the thickness of a part of an effective epitaxial layer directly under the bottom of the guard ring practically thick. CONSTITUTION...
1. Method for identification of precipitation (5) in an area which is covered by radar beams (4), with the method being the following steps: transmission (401) of at least two radar signals with radiation lobes which do not overlap, or o... AA Hassen - US 被引量: 4发表: 2011年 De...