There are some dirts there.
那儿有一些污垢.
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A defect caused by worn gears or dirts gathered on gears of a press cylinder.
是印刷机上的圆筒齿轮因磨蚀或污物堆积所引致的故障.
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Paper samples must be free of fingerprints, dirts, wrinkles, and stored in a clean plastic bag.
提交之纸张样本必须无手指印 、 污垢及皱纹, 并保存在清洁的塑胶袋内.
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Pucheng field has entered the developing later stage. The stratum forms dirts seriously.
针对濮城油田进入高含水开发后期, 地层结垢严重,致使电泵井检泵周期较短现象.
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