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本文介绍了一种用于无油螺杆真空泵的单头变螺距螺杆转子型线 ,给出了型线方程和抽速计算公式 ,并说明了参数确定原则
In this paper, a single-head variable-pitch screw rotor type wire for oil-free screw vacuum pump is introduced. The formula of the profile equation and pumping speed is given, and the principle of parameter determination