个人存取通讯系统
personal access communications system
个人安全报警系统
PASS＝personal alert safety system
个别学生监察系统
individual pupil monitoring system
个别受理信标系统
all digital phase-locked loop
隔热屏蔽系统
thermal insulation system
隔膜破裂报警系统
Diaphragm fracture alarming system
隔离压载系统
segregated ballast system
isolated ballast system