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Where is the difference between the taps of the taps and the two attacks?

2018/6/4 19:20:05 Viewers:
1. head tilt front part is large, easy to recognize, relatively easy to guide, cutting force. The two attack front tilt part is small, if directly with two attacks, easy to attack oblique, cutting force is small.

2. see the taps of the taps are sharp or round, the pointed ones are one attack, the round ones are two attacks, then the threads are threaded, the shallow threads are one attack, and the deep ones are two attacks.

3. a cone has worn down 6 teeth, two cones have worn 2.5 teeth, and a cone has played the role of positioning. The two cone has played a role in modifying the tooth shape.