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
In the experiments, they thread a tube about the width of a hair through a hole the size of a quarter on top of a patient's skull.
在这些实验中，他们将头发一般粗细的管子，从患者头颅顶部约硬币大小的孔洞伸入。
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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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