... 直角弯管 square bent 四角孔拉刀 square broach 方头对接 square butt joint ...
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dental square broach 方型牙髓针
square and hexagon broach 四六方拉刀
·2,447,543篇论文数据，部分数据来源于NoteExpress
The working for square pockets of turning steel cages having high hardness and difficult to broach is conducted in linear cutting.
方形兜孔钢保持架因为钢架硬度高、拉削难度大等特点，始终采用线切割加工方兜孔。
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