发布时间:2025-01-23 22:44:22
诸葛亮的木马计中木马(木牛)的结构示意图如下:
诸葛亮的木马计中木马(木牛)的运动原理:车本身是一根以轴为支点的杠杆,当人们按、抬车辕时,车体就会象跷跷板一样上下运动,操作的人并不费力。人在前面按下辕时,体上的轴就会把木杠往前拖,而抬起辕时,木杠就会支地,使车像撑船一样往前行。如此往复车就持续前进了。
根据建筑工程建筑面积计算规范gbt503532013关于室外楼梯的建筑面积计算的说法正确的是
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