The formulae given here for measuring the parameters of nine kinds of gears, worms and worm wheels have been proved in practice to be applicable.
文中所提出的九种齿轮和蜗轮蜗杆的参数测定公式，经过实测验证是完全适用的。
The formulae given here for measuring the parameters of nine kinds of gears, worms and worm wheels have been proved in practice to be applicable.
文中所提出的九种齿轮和蜗轮蜗杆的参数测定公式，经过实测验证是完全适用的。
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