This device is characterized by its small size, light weight, high efficiency and low cost.
这种器件的特点是体积小，重量轻，效率高，成本低。
Chiefly, wheel size affects efficiency, weight and quality of ride.
归结轮的大小影响效率，重量和乘坐品质的影响。
The power supply has advantages of high efficiency, small volume and weight.
该电源具有效率高、体积小、重量轻等特点。
Using MOSFET inverter technology, Simple circuit small size, light weight, high efficiency and energy saving.
采用MOSFET逆变技术，电路简易，体积小，重量轻，高效节能。
It has small bulk, light weight, high efficiency, and can move conveniently.
体积小、重量轻，效率高，便于移动。
It has small bulk, light weight, high efficiency, and can move conveniently.
体积小、重量轻，效率高，便于移动。
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