So, the establishment of environmental accounting system for oil-gas enterprises is extremely important for the environmental protection.

因此，建立油气企业环境会计制度有极其重要的现实意义。

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Water hydraulic drive system has some advantages of oil hydraulic transmission such as large power, high efficiency and compact structure as well as the unique advantage of environment-protection.

水压驱动系统既保持了油压传动传递动力大、效率高和元件体积小的优点，又兼有环保的积极作用。

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Based on the analysis of the failure mode, this paper put forward the measure for fault protection and pointed out the research direction for developing the reliability of turbine sealing oil system.

通过对失效模式的分析，提出了减少密封油系统故障的有效措施，指出了提高密封油系统可靠性的研究方向。

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"The agreement is a great step forward for the protection of the Arctic from an oil spill because it sets up a system for the states to co-operate in practice, " he said.

BBC: Concerns raised over 'useless' Arctic oil spill plan