The authors point out that only after selecting rational operating mode and control mode of pump unit can the safe and steady operation of pipeline be ensured.

提出只有选择工艺合理的泵机组运行方式和控制方式，才能实现成品油管道的安全平稳运行。

youdao

In operation, the control unit selectively actuates the fluid delivery system to operate in a fluid injection mode or in a balloon inflation mode.

在工作时，控制单元选择地致动流体输送系统以流体注射模式或球囊充胀模式运行。

youdao