然后，当隧道钻机还在强行向前钻进时，锂就回过来消散在隧道钻机的表面来帮助冷却玻璃化了的岩石。
It is then circulated back along the exterior of the tunneling machine to help cool the vitrified rock as the tunneling machine forces its way forward.
本文主要论述对流冷却，隧道的结构和设计。
This article is mainly concerned with the structure and design of All Air Convection Cooling Tunnel.
整个拉矫区内设有铸坯隧道，它由冷却水挡热板构成。因此，对设备的维护保养和操作环境有极大的改善。
There is a billet tunnel in the straightening region, which is made of water cooled heat barrier plates.
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