guide apparatus meaning in English

导向器
导向叶片装置
换向器

Technology of laying pipeline by guiding drilling of trenchless technology mean a new technological method to control and guide rig to creep into through various kinds of guiding apparatus , lay all kinds of different underground pipelines under the condition of not excavated or excavating few in the earth ' s surface
非开挖导向钻进铺管技术就是指通过各种导向仪控制钻机钻进的技术手段，在地表不开挖或少开挖的条件下进行铺设各种地下管线的施工新技术。
The main function of a governor is to monitor the speed deviation of a hydro turbine unit and convert it into the displacement deviation of the servomotor according to a specific characterisic . it is used to control the opening of the guide apparatus and to ensure the unit run steadily at fixed speed under a given load
调速器的主要功用是检测机组转速偏差，并将它按一定特性转换成接力器的行程偏差，借以调整机组导水结构的开度，使机组在给定的负荷下以给定的转速稳定运行。