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关注：1
2013-05-23 12:21
求翻译：7、用于石油钻井，可调节泥浆粘度和密度，可有效防止钻井塌陷，提高 钻井率；是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
7、用于石油钻井，可调节泥浆粘度和密度，可有效防止钻井塌陷，提高 钻井率；
问题补充： |
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2013-05-23 12:21:38
7, for oil drilling, mud viscosity and density can be adjusted, which can effectively prevent the collapse of the drilling, raise drilling rate;
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2013-05-23 12:23:18
7, used in oil well drilling, adjustable mud viscosity and density can effectively prevent drilling collapse and improve drilling rate;
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2013-05-23 12:24:58
7th, uses in the petroleum well drilling, may adjust the mud viscosity and the density, but prevented effectively the well drilling collapse, enhances the well drilling rate;
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2013-05-23 12:26:38
7, used in oil drilling, may adjust the mud viscosity and density, which can effectively prevent drilling collapse, improving drilling rates;
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2013-05-23 12:28:18
7th, uses in the petroleum well drilling, may adjust the mud viscosity and the density, but prevented effectively the well drilling collapse, enhances the well drilling rate;
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