轴颈及花键底径的硬化层深度为（0。
When hardened layer depths of axle neck and spline bottom diameter is(0.
注1设计时，请注意使两个轴端不超过丝杠轴底径。
Note 1 the diameter of the Screw Shaft both ends must be less than the Screw Shaft Root diameter.
注：1。底径用于偶数齿，卡尺测量直径用于奇数齿。
NOTES: 1. Bottom diameter for even number of teeth, Caliper diameter for odd number of teeth.
在幼发拉底河与底格里斯河径分为向南入血脉搏动流入阿拉伯海的蜿蜒河网处，泛滥平原地貌绵延了数千平方公里。
It sprawled across thousands of square kilometres of floodplain where the Euphrates and Tigris rivers divided into a network of tributaries meandering and pulsating south to the Arabian sea.
大径指过外螺纹牙顶或内螺纹牙底的圆柱面直径。
The root of the external thread or the crest of the inner thread .
实验结果表明，同一粒径组的非粘性花岗岩风化砂粒随底坡坡度的增加其起动流速变小；
Test results show:for the same grain size groups the flow velocity relating incipient motion of these granite sand grains decreases as the bed slope increases;
实验结果表明，同一粒径组的非粘性花岗岩风化砂粒随底坡坡度的增加其起动流速变小；
Test results show:for the same grain size groups the flow velocity relating incipient motion of these granite sand grains decreases as the bed slope increases;
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