working temperature limit

例句：

1. 1.The machine's working temperature limit is set at 50 degrees Celsius.
   机器的工作温度限制设定为50摄氏度。
2. 2.The safety regulations require that the working temperature limit be maintained within a certain range.
   安全规定要求将工作温度限制保持在一定的范围内。
3. 3.The engineer carefully checked the working temperature limit of the furnace before starting the operation.
   工程师在启动操作前仔细检查了炉子的工作环境温度限制。