名词
中文翻译：锯齿形线
同义词：
['serrated thread', 'sawtooth wire例句：1. The machine used to cut the wood has a sawtooth thread.（用来切割木材的机器有锯齿状的螺纹线。）']
例句：
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1. The machine used to cut the wood has a sawtooth thread.
用来切割木材的机器有锯齿状的螺纹线。
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2.The screw has a sawtooth thread that makes it difficult to remove.
螺丝的锯齿状螺纹线使得很难拆卸。
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3.The carpenter used a sawtooth thread to fasten the wooden planks together.
木匠使用锯齿状螺纹线将木板固定在一起。