Airway is equipped with rolling ball-type air stoppingvalve;
导气管配有滚球式止气阀；
2
This article is an introduction of a new typed stoppingvalve powered by cylinder which controls the open-on and cut-off of a pipe.
介绍了以气缸为动力源控制管路通断的新型截止阀。
3
Device-to-device communication also assists with decisions made within the enterprise to affect changes at the remote location (opening or closing a valve or stopping an appliance, for example).