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Bottoming Drill

1、[机]平底钻

... 平底直舷外倾小舟 quincy; 平底钻 bottoming drill; 平底钻孔机 bottoming drill ...

2、平底钻头

... Spiral drill with 120 degree at tip end末端为120度的麻花钻头 bottoming drill平底钻头 center drill中心钻头 ...

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