Connect the vacuum pump to the compound pressure gauge; open the compound pressure gauge and vacuum pump to vacuum the indoor unit and connecting pipe.
将真空泵连于复合压力表，打开复合压力表和真空泵对室内机和连接管抽真空。
2
We developed the ground VUV simulation facility for the research of vacuum ultraviolet irradiation and the compound effect of vacuum ultraviolet radiation with other space environments.
为开展真空紫外辐射及真空紫外线与其它空间环境复合效应的地面模拟实验，研制了真空辐照模拟设备。
3
In this paper, the security of low salty dry-cured meat was studied by using low-temperature, compound curing agent, desiccation, vacuum packing and fermenting maturation technology.