However, the Karelian Birch egg was the only one to use an organic substance (wood) as a primary construction element.
卡累利阿桦木蛋是唯一一个使用有机物质(木材)作为主要元素。
Article 49 materials containing radioactivity in excess of standards or materials containing toxic and harmful substance easy to dissolve in the water may not be used in a Marine construction project.
第四十九条海洋工程建设项目，不得使用含超标准放射性物质或者易溶出有毒有害物质的材料。
The article has described substance, characteristic, methods and die types of flasless die forging technology, and it has list the typical die construction figures of flasless die forging.
叙述了闭式模锻工艺的实质、特点、方式及模具型式，列举了典型的闭式模具结构图。
The article has described substance, characteristic, methods and die types of closed extrusion-die forging, and it has enumerated the typical die construction figures of closed extrusion die forging.
叙述了闭式挤锻的实质、特点、方式及模具型式，列举了典型闭式挤锻模具结构图。
According to a concrete exploration survey task, the difficult problems which occur in exploration survey on expressway construction are solved by choosing suitable substance prospecting method.
针对具体的勘察目的，选择合理的物探方法可以有效地解决高速公路勘察中复杂的技术难题。
According to a concrete exploration survey task, the difficult problems which occur in exploration survey on expressway construction are solved by choosing suitable substance prospecting method.
针对具体的勘察目的，选择合理的物探方法可以有效地解决高速公路勘察中复杂的技术难题。
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