Of course , it happened on a friday at 5 p.m. , the witching hour for technical glitches .

当然了，这个故障发生在周五晚上五点，一个通常发生技术故障的时刻。

A meeting was called at the witching time of night .

半夜三更召开了一次会议。

Three a.m. is the demonic witching hour .

三点钟是恶魔横行的时间。

Witching or uncontrolled muscle movements or .

魔力或不受控制的肌肉运动;或。

But this change may influence witching performance , so it is necessary to do analog experiment .

而这种改变可能会影响射流的切换性能,为此有必要进行模拟试验。