船舶发生污染事故时信息交流存在困难，建议增补船舶防污用语的码语，提供标准用语，解决语言隔阂。
Therefore, a proposal on the code supplement to the International code of Signals is presented, which could provide standard code language and solve the language barrier.
介绍了液压油污染度检测原理、方法、标准以及防污染措施。
The inspecting principle, method and standard of pollution level in hydraulic oil and measures for protecting pollution are introduced.
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