working resistance

例句：

1. 1. The machine has a working resistance of 200 N.
   这台机器的工作阻力为200牛顿。
2. 2.The heavy load put on the machine caused it to have a high working resistance.
   机器上施加的重负载导致其工作阻力较高。
3. 3. The engineer calculated the working resistance of the spring in the system.
   工程师计算了系统中弹簧的工作阻力。