Perhaps the suction power slide on the handgrip is open.
可能握把上的吸力滑块已打开。
Press the "Hight power" button to increase suction power, for vacuuming heavier dirt and dust.
为吸附较重的污垢和灰尘，按“高能”按钮，以提高吸附能力。
The main purpose is to provide DC power supply and complete (suction, discharge) control requirements.
主要是提供电磁铁的直流电源及完成(吸、放料)控制要求。
The main purpose is to provide DC power supply and complete (suction, discharge) control requirements.
主要是提供电磁铁的直流电源及完成(吸、放料)控制要求。
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