截洩堦段;截洩阶地 diversion terrace: 导流台地; 分水阶地gravity type diversion weir: 重力式引水堰indian type diversion weir: 印度式引水堰absorption type terrace: 垄形阻流梯地channel type terrace: 槽式梯田下载手机词典可随时随地查词查翻译