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关注：1
2013-05-23 12:21
求翻译：The viscosity index has its origins in the early days of the petroleum industry and is widely used to compare lubricants, despite the fact that there are several problems with it as a quantitative measure of lubricant performance.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
The viscosity index has its origins in the early days of the petroleum industry and is widely used to compare lubricants, despite the fact that there are several problems with it as a quantitative measure of lubricant performance.
问题补充： |
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2013-05-23 12:21:38
正在翻译，请等待...
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2013-05-23 12:23:18
粘度指数在早期有它的起源的石油工业并且是用途广泛比较润滑剂，竟管有它的几个问题作为润滑剂表现一项定量措施。
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2013-05-23 12:24:58
粘度指数在早期有它的起源的石油工业并且是用途广泛比较润滑剂，竟管有几个问题以它作为润滑剂表现一项定量措施。
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2013-05-23 12:26:38
粘度指数在早期的石油行业有它的起源和广泛用于比较润滑剂，尽管它作为润滑剂性能的定量测量的几个问题。
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2013-05-23 12:28:18
粘度指数的起源于早期的石油行业,并正在广泛用于比较润滑剂,尽管有几个问题,作为一个量化标准润滑剂的性能。
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