紧急条件使用的安全密码放在一个密封信封中，宇航员只有在必要情到况下使用，Ivanovsky过于紧张没有按照预定的程序执行。
The security code for use in emergency was supposed to stay in a sealed envelope for the cosmonaut to open only if necessary, but Ivanovsky was too nervous to stick with protocol.
现代研磨剂科技的好处是现在它通常可以从使用研磨剂研磨后直接上蜡或上密封防护剂，而不需要中间其他的抛光程序。
The benefit of modern abrasive technology is that it is now often possible to go straight from compounding to applying wax or sealant protection without the need for intervening polishing steps.
应用改进后的反应堆压力容器瞬态密封分析程序对压力容器模拟体1/4模型进行了冷态和热态密封分析。
The improved transient sealing analysis program for reactor pressure vessel is applied to analyze the 1/4 structure of the model under the cool and the thermal work conditions.
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