... general layout of project 工程总体布置 general projective geometry 一般投影几何 generalized projection 广义投影 ...
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在画法几何投影变换中，不论用换面法或旋转法，一般位置直线均需两次变换才能变成投影面垂直线。
In the transformation of descriptive geometry, no matter the method of change plane or revolve, the oblique line can be changed to a vertical line in two successive transformations.
变方向折线剖面是在地形、地质情况较为复杂地区普遍采用的实测地质剖面方法。其地质剖面图目前一般用几何作图方法以投影法成图。
The construction of the direction changing section is a method of measuring a geological section applied commonly in areas with complex topographic and geological condition.
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