真空管道运输
ETT
ETT Evacuated Tube Transportation
Evacuated tube transportation
Angle Ⅱ class 1 malocclusion
真空系统运行方式分析
Analysis of vacuum system operation mode
储罐-波纹管-管道系统
tank bellow pipeline ( TBP ) system
储存环真空系统
vacuum system of storage ring
动态真空系统
dynamic vacuum system
Demountable vacuum system
多室真空系统
multi-chamber vacuum system
仿真系统系列化
serialization of simulation system