Traditional mechanical lever weighing methods can cause a mechanical error, thus decrease the speed and precision.
传统机械杠杆的称重方法造成较大的机械误差，影响称量的速度和精度。
The factors leading to mechanical error are probabilistic variables in general, so the outputs of linkages are probabilistic ones too.
导致机械误差的因素往往具有随机性，因此，机构的输出误差也是随机量。
On the basis of studying the chance error occurred in the manufacturing process of plunger pump, the writer puts forward the influence of mechanical error on the flow rate of the crank plunger pumps.
通过研究柱塞泵制造过程中的随机误差，明确提出了机械误差对曲柄柱塞泵流量的影响。
On the basis of studying the chance error occurred in the manufacturing process of plunger pump, the writer puts forward the influence of mechanical error on the flow rate of the crank plunger pumps.
通过研究柱塞泵制造过程中的随机误差，明确提出了机械误差对曲柄柱塞泵流量的影响。
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