And the normal engagement angle of approaching double-point tooth area is deduced. The special dressing method of shaving cutter has been adopted.

推导了进入双点啮合区的法面啮合角公式，采取了独特的剃齿刀修形方式，从设计和修形上下功夫杜绝剃齿中凹的产生。

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An ingenious new laser called Waterlase adds to that the ability to cut through dry teeth and bone by casting a cloud of hot water vapor around the laser's cutting point, a couple of millimeters from the tooth.

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The larger point here is that the Democratic Party should have been fighting the outsourcing trend tooth and nail.

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The wider point here is that Blatter's tenure as FIFA president has been internationalist in tooth and claw.

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