The fuselage is round and tapered front and rear with a pointed nose and tail cone and a belly fin.
圆形机身和锥形前部和尾部采用一个尖形前鼻和尾锥和一个腹鳍。
The inner cone grinding method of twist drills is discussed. The phenomenon of up tail in the grinding method is exposed and the solving idea is given.
阐述了麻花钻内锥面刃磨法的原理及参数的确定方法，揭示了内锥面刃磨中存在“翘尾”现象的原因并提出了相应的解决措施。
The inner cone grinding method of twist drills is discussed. The phenomenon of up tail in the grinding method is exposed and the solving idea is given.
阐述了麻花钻内锥面刃磨法的原理及参数的确定方法，揭示了内锥面刃磨中存在“翘尾”现象的原因并提出了相应的解决措施。
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