已使用经同意之通气系统？
给出了通气管和潜望镜观察系统组合应用的实例。
Examples of snorkel-periscope system combination applications are given.
在地板下无需安装通气和通风系统。
Installation easily: There is no need to install ventilation system under the ground.
适用于真空系统中，用来切断或导通气流。
It is applicable for vacuum system to cut off or put through the airflow.
适用于真空系统中，用来切断或导通气流。
It is applicable for vacuum system to cut off or put through the airflow.
应用推荐