Manufacturing and assembly errors of key geometric parameters are obtained by experiments which supplies basis of machine error compensation.

通过试验，获得了该机床的关键几何参数的加工和装配误差，为机床的误差补偿提供了重要依据。

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Mr. Franken is also trying to raise public doubt about an "undervote" -- suggesting that only machine error can explain why he received 12.2 percentage points fewer votes than did Barack Obama.

WSJ: Al Franken's Minnesota

Each has a unique design, so a systematic machine-related error is unlikely.

ECONOMIST: Physics

In Palm Beach and Broward Counties, Harris effectively shut down attempt to conduct manual recount the votes there when her office issued a ruling that "a counting error" means that a machine fails to read a properly marked ballot.

CNN: graphic