水面/水下监视协调官
surface/subsurface surveillance soordinator
SSSC
水下[下水]滑道
under water launching way
船用下水气囊
air-bag for ship launching
气水气换热器
air-water-air heat exchanger
水下气体保护焊
underwater gas shielded arc welding
自足式半闭路混合气水下呼吸器
semiclosed-circuit mixed-gas scuba