较大提高密封环的密封性可以超越你的动力输出范围从而获得更大的扭力和动力！
Plus, you'll have much better torque and power across the power range from the vastly improved ring seal.
小马力，低转速，高扭力，减少能源，提高品质精密度。
Lillte horse power. Low speed revdving . high twisting strength, reduce energy usage, improve quality precision.
对功率小或转速高的电钻通过设置减速器来增大扭力或降低转速，以提高疏通效果。
The electric drill with small power or a high rotating speed increases torsion or reduces the rotating speed by being provided with a speed reducer in order to increase dredging effects.
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