The starting motor, the vacuum pump starts to work, adsorbs the floor to produce the adsorption results.

启动电动机，真空泵开始工作，吸附台面产生吸附效果。

youdao

The starting motor, the vacuum pump starts to work, adsorbs the floor to produce the adsorption results.

启动电动机，真空泵开始工作，吸附台面产生吸附效果。

youdao