Adjective
sub-surface
Alternative spelling of subsurface
A control room for the sub-surface network has been built in Hammersmith and an automatic train control (ATC) system is to replace signalling equipment installed from the 1920s such as the signal box at Edgware Road, still manually operated. Source: Internet
Aircraft carrier type Aircraft carriers are ships designed primarily for the purpose of conducting combat operations by aircraft which engage in attacks against airborne, surface, sub-surface and shore targets. Source: Internet
Mining techniques Underground longwall mining Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) mining. Source: Internet
Scientists were to inhabit igloos and drill down into the Europan ice crust, exploring any sub-surface ocean. Source: Internet
Typically, pre-conditional factors build up specific sub-surface conditions that make the area/slope prone to failure, whereas the actual landslide often requires a trigger before being released. Source: Internet