Circles are drawn in top and bottom halves, from largest diameter to smallest.
圆形按直径从最大到最小绘制在上半部和下半部。
The idea being that the tree needs the same total vein diameter from top to bottom to properly irrigate the leaves.
他们认为，树木将水分输送至叶片的整个过程中，具备的总叶脉直径应当是相同的。
When hardened layer depths of axle neck and spline bottom diameter is(0.
轴颈及花键底径的硬化层深度为（0。
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