horizontal directional drilling technology has become a important part of non-excavation techniques, and has a big market in china.
非开挖中的导()技术已成为非开挖技术中不可缺少的重要组成部分。
to apply horizontal directional drilling horizontal directional drilling technology to conduct pipe renewing;
介绍定向鉆进技术在可溶性矿的具体应用 ,探索先进的可溶性矿的开采方法。
horizontal directional drilling technology is widely used in urban underground pipe laying engineering.
在非开挖工程中,水平定向鉆进技术广泛应用于城市地下管线铺设工程。
the application of horizontal directional drilling technology in municipal pipeline;
为有效开采煤层气,应用定向鉆进技术施工煤层气定向井。