entrance guard’s system  门禁系统

section s-s s-s  剖面

entrance guard system  门禁系统

entrance guard system based on RFID  RFID门禁系统

intelligent entrance guard system  智能门禁系统

SⅠSⅡSⅢ syndrome  SⅠSⅡSⅢ综合征

diversified college entrance system  多元入学

Entrance Guard  门禁

Entrance guard and pen  门禁围栏

network entrance guard  网络门禁

Regulation of Doctor’s Entrance  医师准入制度

border guard system  光纤周界防范

bucket corner guard system  铲斗斗角保护系统

corner guard system  边角保护系统

door guard system  门禁系统

drop one’s guard  丧失警惕

Forest-guard system  森林保护制度

gate guard system  门禁系统

Guard System  安防系统

guard’s valve  车长阀