The -s switch specifies that only the synchronous (blocking) methods will be available.
s开关指定只有同步(块)方法可用。
Reverse blocking tetrode thyristor; semiconductor controlled switch.
反向阻断四极型可控硅、半导体控制开关。
A new type of hydraulic control switch with circular adjustment for blocking water in oil well is developed.
研制了一种新型液压控制可循环调层的堵水开关。
Jam occurs, because the material accumulation, open top anti blocking door, with the stroke switch after dump.
发生阻塞时，因为物料堆积，顶开防堵门，同的经过行程开关堵截电源。
Jam occurs, because the material accumulation, open top anti blocking door, with the stroke switch after dump.
发生阻塞时，因为物料堆积，顶开防堵门，同的经过行程开关堵截电源。
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