safety critical systems

• 安全关键系统

safety critical systems的用法和样例：

例句

1. 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。