safety critical systems
英
美
- 安全关键系统
双语例句
- But China's space agency built several key systems on its own, and in some ways the Shenzhou is technologically superior to the Soyuz.
然而，中国国家航天局自行建造出许多关键系统，使得神舟号在某些技术层面优于联合号。
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