Metal cutting machines have been decreased to 50.

金属切割机已经减少到50台。

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There was no significant difference of CTX accumulative quantity between these three groups when disease activity scoring decreased to 50% ( P > 0. 05).

病情活动性积分下降至50％时，三组CTX累积量无显著性差异（P>0.05）。

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Now the organization estimates the value of American recyclables has decreased by 50 to 70 percent.

而据该协会估计，现在的总值下降了50%~70%。

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While overall hybrid sales are up substantially over last year, a recent survey by JD Power suggested that the number of people interested in hybrids actually decreased, from 57 percent to 50 percent.

NPR: The Prius Rules Hybrids �� but Is Interest Falling?

Since 2007, potential opium production in Helmand has decreased by nearly 50 percent, from 4, 019 metric tons in 2007 to 2, 100 metric tons in 2010.

WHITEHOUSE: Afghanistan