recess width of thread portion 螺纹退刀槽宽度
width h of thread 螺纹宽度
Width of Flat Seal Thread 封口扁丝宽度
·2,447,543篇论文数据，部分数据来源于NoteExpress
All of the specimens measured a thread-like 0.57mm (0.02in) in width.
BBC: NEWS | Science/Nature | Most leggy millipede rediscovered
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