troughn.水槽;马槽;低谷;低潮
trough conveyor槽式输送机,槽形运输机
trough of flame火焰空穴,火焰槽
trough spillway槽式溢洪道
trough of eaves天沟
troughing idler槽形支承辊
troughing plate槽形钢板
troughing idlers(皮带机用) 槽形布置托滚
trough tip wagon倾斗车,槽形翻斗车
troughing roller凹槽滚轮
trough waveguide横形波导