critical pressure ratio

例句：

1. 1. Theengineer calculated the critical pressure ratio for thenew system.
   工程师计算了新系统的临界压力比。
2. 2. The team needs to maintain acritical pressure ratio to ensure safety.
   团队需要保持一个临界压力比以确保安全。
3. 3. Themanufacturer has adjusted the critical pressure ratio oftheir product to meet new standards.
   制造商已经调整了他们产品的临界压力比，以符合新的标准。