This article compares the fuelling process between the typical self - suction pump and modern immersible pump - based fuelling in fuelling stations 摘要介绍了传统加油站采用自吸泵型加油机的加油工艺和近年来采用潜油泵加油机的加油工艺，并进行了对比。
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It is pointed out that the immersible pump - based fuelling process can realize the multi oil gun on the one pump basis under the condition of positive pressure , which makes the design of fuelling station more flexible and is a development tendency in modern fuelling station 指出采用自吸泵型加油机的加油工艺存在弊端，而采用潜油泵加油机的加油工艺，可以实现一泵多枪，油罐正压出油，技术先进，工艺简单，使加油站设计更加灵活，是现代化新型加油站的技术发展趋势。
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Virtual machining is a very important part in systematized techniques about virtual manufacturing . it requests an immersible 3d virtual machining environment which supplies panoramic , integrated simulation and analysis for the processing of product so as to evaluate the rationality of machining process parameters and the machining quality of product 虚拟加工是虚拟制造技术体系的重要组成部分，它要求有一个具有一定沉浸感的三维可视化虚拟加工环境，并能对产品加工提供全方位的、集成的仿真分析，以对工艺参数的合理性、产品的加工质量等做出评价。
