当没有通道被选中时，每组开关的第一个通道（常闭）被连接到一个输出端口。
When no channels are selected, the first channel of each bank, which is normally-closed, is connected to an output port.
排泥阀产品由液压缸和角式截止阀组合而成，液压缸内动力带动瓣升降，使阀体通道开或闭，以达到流体通断。
Mud valves and Angle by the hydraulic cylinder type combination valve, hydraulic power drive cylinder valve lift, the valve open or closed channel, in order to achieve the fluid off.
开关块通过弹簧、推压块调整流道的位置，起到开、闭牙膏通道的作用。
The switch block adjusts the position of the flow passage by a spring and a push pressing block, so the switch block has the function of opening and closing the toothpaste passageway.
研究结果表明：该方法能解决闭式整体叶盘通道插铣区域划分和直纹包络面生成问题，可有效实现闭式整体叶盘的五坐标开槽粗加工。
The results show that the channel region division and the ruled envelope surface generating can be solved by this approach, and the slot plunge milling of closed blisk can be achieved effectively.
应用多通道模型对闭式燃料栅格反应堆进行热工水力分析时，首先需要解决流量分配问题。
When multi-channels model is used for thermal-hydraulic analysis in reactors with closed fuel lattice, the mass flux distribution must be solved at first.
针对闭式整体叶盘通道开槽工艺问题，研究了叶盘通道五坐标开槽插铣加工方法。
With regard to the slot process of closed blisk, a 5-axis slot plunge milling method of closed blisk is studied.
针对闭式整体叶盘通道开槽工艺问题，研究了叶盘通道五坐标开槽插铣加工方法。
With regard to the slot process of closed blisk, a 5-axis slot plunge milling method of closed blisk is studied.
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