投影面积是一个名词，常出现在数学中，指的是阴影外轮廓线包围的面积。
叶片投影面积 [动力] projected area of blade ; leaf projection area
铸件投影面积 Projecting area of casting
投影面积比 projected area ratio
水平投影面积 horizontally-projected area ; horizontal phasing control projected area
螺旋桨投影面积 projected propeller area
桨叶投影面积 projected blade area
船体侧面投影面积 hull side area ; hull resonant frequency side area
轴承投影面积 projected bearing area ; bearing projected area
正面投影面积 frontal projected area
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谷壳投影面积主要由谷壳宽度所决定。
林木冠幅(平均投影面积)对近林带处小麦的产量影响较大。
Among the influent factors, the projection area of tree crown has a great affect on wheat output.
然后根据估算的投影面积，可以进一步近似测量光强和失能眩光的值。
Then based on the estimated projected area, we may further the approximate survey luminous intensity and the value of disable glare.
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