The trigger zone is hard to customize with simple lenses.
使用简单的镜片，很难定制出触发器区域。
The major failure causes included technical difficulties, vasovagal reactions, the absence of a distinct trigger zone, and no analgesia induced by procaine test.
失败的主要原因包括：卵圆孔穿刺技术，迷走神经反应，无扳机点，普鲁卡因测试不能达到完全不痛。
The major failure causes included puncture muff, severe vasovagal reactions, the absence of a distinct trigger zone and incomplete analgesia after the procaine test.
失败的主要原因包括卵圆孔穿刺失误，迷走神经反应，无扳机点和普鲁卡因测试不能达到完全不痛。
Only the illegal invaders from the inside outward into the alert zone would trigger the alarm.
只有非法入侵者从外向内闯入警戒区，才会触发报警。
The threshold detector is similar to a Schmitt Trigger in that it is a latch circuit with a large dead zone.
阈值检测器就是一种回差范围较大的锁存电路，与施密特触发器相似。
The threshold detector is similar to a Schmitt Trigger in that it is a latch circuit with a large dead zone.
阈值检测器就是一种回差范围较大的锁存电路，与施密特触发器相似。
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