The control valves with ceramic trim are expounded. It has the corrosion-proof, abrasion-proof and high temperature proof performance, and it also has obtained successful application.
论述了陶瓷内件控制阀的研制，该阀内件同时具有耐腐蚀、耐磨损(包括冲刷、气蚀)与耐高温的性能。已获得成功应用。
Place of storage shall be clean, hygienic, high temperature and water-proof and far away from source of pollution.
贮存场所应清洁卫生，防高温，防风雨，远离污染源。
The present nondestructive inspection techniques are unable to recognize small flaws, the metallurgical drawbacks and tight cracks, low temperature and high pressure proof-test can do it.
目前各种无损检测技术无法确定小裂纹、紧闭裂纹和冶金缺陷，压力验证试验却能弥补这方面的不足。
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