full conduit ball valve是什么意思

用法例句

Design of Heavy Caliber Ball Valves and Their 3-D Numerical Simulation;

大口径球阀的阀体设计和三维数值模拟

This paper emphatically analyzes and researches on natural gas pipe ball valve basic structure and composition,structural characteristics and species of valve seat,structural characteristics of grease injection spout, and sealing principle of ball valve.

文章着重对天然气管道球阀基本结构和组成、阀座结构特点和种类、注脂嘴的结构特点以及球阀的密封原理进行了研究和分析,结合实际对天然气管道球阀的维护和使用提出了需要注意的问题。