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２１世纪人类将全面进入海洋开发时代，各种海洋水下工程都需要大量的水下作业。对体积小，重量轻、灵活方便、驱动功率又大、高效节能、与环境相容的水下作业工具将是现代水下作业的首选装备。本文在分析比较现有几类水下作业用机械工具特点的基础上，着重论述海水液压水下作业工具的突出优越性，并介绍近年来国际上关于海水液压水下作业工具的研究和发展情况，以供水下作业工具使用和研究开发工作者参考。
In the 21st century, mankind will fully enter the age of marine development. All kinds of underwater and marine projects will require a large amount of underwater operations. Small, lightweight, flexible and convenient, large power drive, energy efficient, environmentally compatible underwater operation tools will be the preferred equipment for modern underwater operations. Based on the analysis and comparison of the characteristics of several types of underwater operation machine tools, this paper focuses on the salient advantages of underwater hydraulic tools, and introduces the international research and development of underwater hydraulic tools in recent years. , For underwater use tools and research and development workers for reference.