section of ladder

基本解释梯节

网络释义

1)section of ladder,梯节2)Elevator Energy-saving,电梯节能3)halfpace stair,两节楼梯4)four-section ladder,四节梯5)ladder fly,上节梯6)main section,下节梯

用法和例句

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

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