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The new structure of a taper pin connection with external thread is introduced.
介绍了一种外端带有螺纹的圆锥销联接的新型结构.
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It's the common process of machining the external thread on mould of bottle cover & bottle mouth.
瓶盖 、 瓶口类模具外螺纹加工是较普通的,但内螺纹因为其特殊性,加工较困难.
External thread on lens barrel is matched and locked to internal thread on the lens seat.
一镜筒设有外螺纹,是螺锁于该镜座的内螺纹上.
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