saves the copper material
节省铜材
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Volume small, weight light, saves the copper and the steel consumes the material, the electricity efficiency high, a charge may continue the distance long, the hill climbing performance is strong.
体积小、重量轻，节省铜与钢耗材，电效率高，一次充电可续路程长，爬坡性能强。
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