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single section ladder是什么意思


中文翻译单节梯

网络释义

1)single section ladder,单节梯2)section of ladder,梯节3)first floor ladder,单梯4)Elevator Energy-saving,电梯节能5)halfpace stair,两节楼梯6)four-section ladder,四节梯

用法例句

    Discussion on the Contribution of Relaxing the Electric Power Tension by Elevator Energy-saving;

    谈电梯节能对缓解全国用电紧张的贡献