Hashash explains that the immersed-tube design requires largeportions of the tunnel to be built on a dry dock that is floated outinto the water and sunk.
哈沙什解释说，沉管式的设计要求大部分的隧道建筑在干坞上，干坞漂浮并沉没在水里。
2
The gas used in GC must be dry, so it have to pass a drying tube first.
用于气相的气体必须是干燥的，所以气体必须先经过一根干燥管。
3
The experimental results show that integral internal spiral fin tube is very effective for flow boiling heat transfer of freon dry evaporator.