tachometer wheel
... digital tachometer 数字式转速表 ; 数字式转速计 tachometer wheel 测速轮 Tachometer carburetor 转速调节式化油器 ...
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主动轮测速机装置 [机] capstan-tachometer assembly
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首次推导出测速轮的测长误差和测速轮与钢管接触压力的计算公式，为测速轮及测速机构的设计提供了理论依据。
For the first time, formulas for calculating the tachometric wheel measurement-tolerance and the wheel's contact pressure against the pipe are derived, providing a theoretic basis for design...
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