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奥地利VivaxAssist研发的这套称之为“隐形的特殊包裹”的超级轻量化驱动装置,重量极轻,仅达2.1kg。整套驱动装置均躲藏在自行车车架内。车架上装有一种与其配套、外形呈水壶状的蓄电池。这一驱动装置可借助于一个操作按钮,以无线电传
The super light-weight drive developed by Austria’s Vivax? Assist called “invisible special package ” is extremely light and weighs only 2.1 kg. The entire drive is hidden in the bike frame. The frame is equipped with a matching, shape-shaped kettle battery. The drive can be transmitted by radio with the aid of an operating button