垂直: perpendicular; vertical; squareness; verticality; perpendicularity 短语和例子两线垂直相交。the two lines meet at right angles. 设 ab 垂直于 cd。let ab be perpendicular to cd. 当表面与射线垂直时,射线的强度最大。when a surfa
A mounting for astronomical telescopes that permits both horizontal and vertical rotation 经纬仪天文望远镜的底座,可以使望远镜水平和垂直旋转
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Z test conditions for machining centres - part 2 : geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis vertical z - axis 多工位数控加工中心的试验条件.第2部分:带垂直主轴或带垂直旋转主轴通用头的机器的几何尺寸试验