Should that count? Perhaps the planet's true diameter is actually nearer 13,000km, including all its air.
也能计算吗？包括空气(大气层)在内，地球的直径可能接近13,000公里。
After using this instrument, the true value of the spherical diameter size could be measured.
使用该仪器后，可测出球面直径尺寸的真实值。
Is it true that there is no direct conversion between the aperture size (diameter) and meshes of silk screen?
丝网孔度(直径)和目之间是否无法直接换算？
Is it true that there is no direct conversion between the aperture size (diameter) and meshes of silk screen?
丝网孔度(直径)和目之间是否无法直接换算？
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