梯级

• Study on long - term optimal operation of cascade hydropower plants on the jinshajiang river
  金沙江梯级水电站发电长期优化调度研究
• Joint operation scheme of songshan reservoir and xiaoshan reservoir in songjianghe cascade
  松江河梯级之松山小山水库联合调度方案
• Some footbridges and subways have ramps and escalators as well as steps
  有些行人天桥和行人隧道不但有梯级，还有斜道和电动扶梯。
• Choose the platform height that would not require bending your knees more than 90 degrees
  梯级不宜太高，以免膝盖弯曲多于九十度。
• Effect of wujiang river cascade hydropower stations on west to east power transmission project
  乌江梯级水电站在贵州西电东送中的作用
• Short - term optimal dispatch of cascaded hydropower stations based on improved ant algorithm
  基于改进蚂蚁算法的梯级水电站短期优化调度
• The lok fu centre is the largest commercial shopping centre under the housing authority
  下车后，可从竹园道天马苑侧的梯级拾级而上。
• Study on economic operation of cascaded hydropower stations under competitive price market
  竞价上网环境下梯级水电厂的经济运行问题研究
• Pulse corona and a new mechanism of the negative steppedleader in cloud - to - ground lightning discharge
  脉冲电晕与地闪负先导梯级性机制模式探讨
• You have walked for about 200 steps and 200 m gentle up - slope path . note the time again
  你已向上走了200级梯级及200米缓斜道路，所需时间是多少呢？