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The oil temperature along the buried hot oil pipelines is influenced by operating schedule.
热油管道运行时，沿线油温受运行历史的影响。
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Do not neglect to oil the machine before operating it.
在开机器之前不可忽略给机器上油。
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Do not neglect to oil the machine before operating it.
在开机器之前不可忽略给机器上油。
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