The test results have proved that the flow rate widely varied and the pump efficiency is high when the pump outlet line structure was altered and the outlet pressure was controlled in a special limit.
试验结果表明，改变泵出口管线结构，使泵出口压力在一定范围内工作时，流量变化大，而且泵效率较高，可以作为泵调整参数的一种手段；
BACKGROUND: Thoracic outlet syndrome can be divided into nervous system type and vascular type according to different compressed structure.
背景：胸廓出口综合征可因受压的结构不同分为神经型和血管型。
This paper outlines the modification design for the structure of thermocouple at the outlet of cracker, the selection of sealing materials for new type thermocouple and the operation condition.
介绍裂解炉出口热电偶结构形式的设计改进、新结构形式热电偶密封材料的选择及生产运行。
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