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1.The nodon valve is a crucial component in the process of gas purification.
无阀管是气体净化过程中的关键部件。
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2. In the design of the nodon valve, attention must be paid to its structural integrity and sealing performance.
在设计无阀管时，必须注意其结构完整性和密封性能。
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3. The nodon valve was used to control the flow of gases through the pipeline system.
无阀管用于控制气体通过管道系统的流动。