为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

This paper presents the results of an experimental study focused on the propagation of dam-break flow waves over movable......

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从人机界面方面论述了制作多媒体CAI课件的一般原则:一致性;适应性;清晰性;敏捷性;容错性;易学易用性;所见即所得.......

目的：研究瘦肉精的快速检测方法,有利于监管部门的行政执法。方法：对金标检测卡进行灵敏度和特异性实验,并采用金标检测卡和GC-MS离......

For a century, hypothesis of a variable time is laid down by the Relativity Theory. This hypothesis can explain many Nat......

Is it possible to demonstrate the velocity addition without using a variable time (as it is done in theory of relativity......

This paper presents the results of an experimental study focused on the propagation of dam-break flow waves over movable......

本文采用水文、水力学相结合的方法,研究三峡建库后库区洪水波动力特性。首先,通过分析一般河道型水库洪水期水流规律,对三峡建库......