... 渐开线蜗杆 involute helicoid worm 渐开线蜗杆基圆 base circle of involute helicoid worm 渐开线蜗杆基圆直径 base diameter of involute helicoid worm ...
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渐开线蜗杆基圆直径 [机] Base diameter of involute helicoid worm
渐开线蜗杆基圆柱齿距 Base pitch of involute helicoid worm
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