operating limit

例句：

1. 1. The operating limitof the machine is set at 500 rpm.
   机器的操作极限设定为500转每分钟。
2. 2. Theengineer must operate within the operating limit toensure safety.
   工程师必须在操作极限内工作以确保安全。
3. 3. The team was operating within theiroperating limit when they encountered a technical issue.
   当团队遇到技术问题时，他们仍在操作极限之内。