1. Door control：美国电话电报公司 American Telephone and Telegraph Company AT&T | 门禁 Door control | 门禁系统 Access Control System
2. entrance control：门电路/选通电路 gate circuit | 门禁 entrance control | 门矩阵 gate matrix
3. 门禁什么意思
3. ACS:Acess Control System：PSD:Platform Screen Door 屏蔽门 | ACS:Acess Control System 门禁 | PIS:Passenger Information System 乘客信息