But the existing automation trickling irrigation technology will have higher cost, if using in express highways.
但现有的自动化滴灌技术如果用于高速公路，成本较为高昂。
In the construction of express highways in mountainous areas in west China, landslide or failure of the mudstone slopes often occur.
中国西部山区泥岩地层中修建高速公路，泥岩边坡常发生变形失稳破坏。
In the construction of express highways in mountainous areas in west China, landslide or failure of the mudstone slopes often occur.
中国西部山区泥岩地层中修建高速公路，泥岩边坡常发生变形失稳破坏。
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