Complete the design of the inner pack assembly of the down-hole blowout preventer. Accomplish the strength analysis and check of the easily worn parts.
完成了井下防喷器的内封隔总成部分的设计，并对易损件进行了强度分析及校核。
Complete the design of the inner pack assembly of the down-hole blowout preventer. Accomplish the strength analysis and check of the easily worn parts.
完成了井下防喷器的内封隔总成部分的设计，并对易损件进行了强度分析及校核。
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