This paper proposes an automatic calibration system of bell prover gas calibration facility. 摘要介绍了一种钟罩式气体流量标准装置自动检定系统。
Passengers using wheelchairs can purchase fare tickets at specially designed machines and enter through extra wide automatic ticket gates. 使用轮椅的乘客可以在特别的售票机上购票并进入通过加宽的自动检票口进入地铁。
