弧面分度凸轮机构是一种用于两垂直交错轴间的间歇分度步进传动机构。
Globoidal indexing CAM mechanical is one of the intermittent transmission mechanical which applied to two axes of upright interleaving.
结合区域沉积环境确定该蛇绿岩带的构造环境为扩张历史暂短、洋陆转换不彻底、发育于消减带上的弧间裂谷盆地。
On the bas is of the regional depositional environment of the ophiolite zone, it indicates a short-term spreading, the ocean-land transform is not complete, and developed on the interarc rift basin .
近代大地测量中，是利用恒星来测定地球某两地间子午线弧长的。
Modern geodesy, is used the stars to determine the earth a between meridian arc length.
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