... 铅直输送 vertical tra fer; vertical transfer; verticaltra fer 铅直输送系数 vertical tra ort coefficient; vertical transport coefficient; verticaltra ortcoefficient 垂直 perpendicular; vertical; squareness; verticality; perpendicularity 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 surface is perpendicular to the rays, their intensity is at its maximum ...
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