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first calculation中文是什么意思

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用"first calculation"造句"first calculation"怎么读"first calculation" in a sentence

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  • 第一计算法

例句与用法

  • It is interesting to note that the first calculation of the diameter of the earth was made following a nice experiment by eratosthenes , a contemporary of archimedes in the second century b . c
    有趣的是,对地球直径最早的计算是由eratosthenes的一个很好的实验进行的,他生活在公元前二世纪,与archimedes同时代。
  • First calculation method : doing horizontal projection drawing on drawing piece , k value is introduced by area equation of projection drawing , k value is obtained by area equation , along outline of projection drawing to add k value , that is , outline shape of blank drawing , principle area - equal and shape similar are used . second calculation method : along outline of drawing piece horizontal projection drawing , to do normal line of penetration line for wantonly point of this point , to obtain high of drawing piece on this point normal line , point and point is to form outline shape of blank
    计算方法之一为k值法:作拉深件水平投影图,在该投影图面积方程中引入k值,利用面积相等原理解方程,求得k值,沿水平投影外沿加上k值,即为毛坯图的外廓形状。计算方法之二为拉深线法:沿拉深件水平投影图外廓,在任意点作该点切线的法线,在该法线上以该点拉深件的高度为量,在法线上取截点。
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