operating time造句

1、The way to shorten the operating time of the arm of the punching robot
缩短冲压机器人手臂动作时间的途径

2、During the shunting spend two hours, the actual operating time of only 12 hours.
期间调车花费2个小时，实际作业时间只有12个小时。

3、It has advantages of simple step, shortening operating time and so on.
本发明具有步骤简单、缩短操作时间等优点。