Natural road building materials have a close relation to the engineering quality and cost, and the changing of geologic conditions may cause some design modifications.
天然筑路材料与工程质量及造价有着密切关系，变更设计中有些是由于地质条件的变化而引起的。
The Henan-based company is building a facility to produce 150,000 off-road radial tires annually for engineering vehicles.
总部位于河南的这家公司正在建设年产15万条工程子午胎的工厂。
It is applicable for road construction, water and electricity engineering farmland leveling, port building, mining and other engineering conditions.
可用于道路修筑、水电工程、农田改造、港口建设矿山开发及其它建筑工程项目的土石方作业。
It is applicable for road construction, water and electricity engineering farmland leveling, port building, mining and other engineering conditions.
可用于道路修筑、水电工程、农田改造、港口建设矿山开发及其它建筑工程项目的土石方作业。
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