前言这篇流体动力密封的技术报告是气动和液压系统中主要构件的权成性论文的第十篇。篇专供流体动力系统设计用的摘要,是基本资料中最完整而又普遍适用的精选资料。概述采用流体动力系统的主要缺点之一,乃是整个系统的泄漏。若能制止各种液压机械和各种系统的泄漏,则估计每年可节约液体10亿加仑以上。 Preface This technical report on fluid-dynamic seals is the tenth of a paper on the power of the main components in pneumatic and hydraulic systems. The abstract for the design of fluid power systems is the most complete and generally applicable selection of basic data. Overview One of the major drawbacks of using fluid power systems is the leakage of the entire system. If it is possible to stop the leakage of various hydraulic machines and various systems, it is estimated that more than one billion gallons of liquid can be saved annually.