There are some dirts there.
那兒有一些污垢.
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A defect caused by worn gears or dirts gathered on gears of a press cylinder.
是印刷機上的圓筒齒輪因磨蝕或污物堆積所引致的故障.
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Paper samples must be free of fingerprints, dirts, wrinkles, and stored in a clean plastic bag.
提交之紙張樣本必須無手指印 、 污垢及皺紋, 并保存在清潔的塑膠袋內(nèi).
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Pucheng field has entered the developing later stage. The stratum forms dirts seriously.
針對濮城油田進入高含水開發(fā)后期, 地層結(jié)垢嚴重,致使電泵井檢泵周期較短現(xiàn)象.
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