To solve the problem of leakage of reaction vessel, a new C-ring for the sealing of the reaction vessel is developed.
为解决反应釜密封泄漏问题，研制了新型类c形密封环。
The resistance of nitrided J55 casing to sulfide stress cracking (SSC) was studied by C-ring testing and three-point bending testing under different conditions.
用应力环腐蚀试验和三(四)点弯曲试验研究了某J 55(即石油套管)渗氮套管在不同试验条件下的腐蚀行为，并和未渗氮套管的抗腐蚀性进行了比较。
The reactivity of tertiary and secondary C connected to the arene ring was increased obviously.
芳环的存在可以增加与其相连的仲碳和叔碳的反应活性。
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