... abnormal condition非常状态，异常状态 abnormal costs特别成本，非常成本 abnormal crimp 异常卷曲 ...
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It is a very important way to decreasing drilling costs by finding the abnormal conditions while drilling and preventing drilling defaults occurrence using drilling information.
利用钻井过程中的各种信息及时发现钻井异常情况，预防钻井事故的发生是降低钻井成本、提高钻井经济效益的重要途径。
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Centerra did not have any abnormal mining costs in 2011.
FORBES: Third Quarter Operational and Financial Results
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