与西雅图的工程相似的是,这里的项目也需要新的钻探技术,包括在上马巨型隧道掘进机(TBM)前使用探孔来评估土质条件。
Similar to the Seattle project, this one required new drilling techniques, including the use of probe holes to assess ground conditions ahead of the huge tunnel-boring machines (TBM).
一月至五月是少雨的前季风时期,孔布山谷平均每五天中就有一天笼罩在厚厚的棕色烟云下。
In the rainless pre-monsoon months between January and May, about one day in five saw the Khumbu valley blanketed in a dense brown cloud.
日前,古生物学家公布了一种生活在2.35亿年前、会"飞行"的爬行动物孔耐蜥。
Paleontologists have unveiled an extraordinary prehistoric 'flying' reptile kuehneosaurs which lived 235m years ago.
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