Face - to - face dimensions of standard raised face flanged end valves are shown on catalog pages covering dimensions for each valve 标准凸面法兰端口阀门的面对面尺寸在每个阀门的介绍页面中列出。
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Cuhk has always put into practice a liberal policy in research undertakings that allows breadth and depth . research activities at cuhk cover dimensions 中大在推动研究工作上一直采取开明政策，以达到既广且深的发展。
