Has a compact structure, small size, light weight, low noise, small vibration and so on.
具有结构紧凑，体积小，重量轻，噪音低，振动小等优点。
High-volume ratio: a compact design, small size, light weight, flexible and convenient to carry.
高容积比：紧凑设计，体积小，重量轻，携带灵活方便。
Structure compact: the small size and light weight.
结构紧凑：体积小、重量轻。
Structure compact: the small size and light weight.
结构紧凑：体积小、重量轻。
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