A single "door" shutter wouldn't be able to open and close this fast.
单一的“门窗”是无法再这样的高速下完成开启——闭合这一整套动作的。
Because of fast close of speed open-shutter, the shocking pressure is produced in supply water pipe, This is the main causes of break of supply water pipe and its sleeve.
在洪水管路中，由于快速开闭器的速关而产生的冲击压，是供水管路和接头破裂的主要原因。
应用推荐