... back transient 反向瞬态过程 back-tunneling反向隧道效应 backup 备用[设备];辅助;支持;备件;填砂;备用的;辅助的;后援的 ...
双语例句
1
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.
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。
2
During tunneling, there are back and forth displacements at pile top along the direction in which the tunnel is pushed forward.