noiseless motor
常见例句
- Silent designing: built in high power cooling fan with tranquil motor, running noiseless.
独特超静音设计：特殊冷却风扇马达设计，运转安静无噪音。 - Inernal transmission is motor reducer direct connection. It is steady, durable and noiseless.
内部传动为电机减速机直联，传动平稳、耐用、无噪音。
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