A sound trigger was attached to the flash unit so that the jumper could set off the flash automatically by clapping his hands.
闪光灯组上装置了声音触发装置，当被摄体跳起后可通过击掌自动触发闪光灯。
Aiming at this question, we developed the corn snapping unit constituted by horizontal snapping roll and rell tine with jumper.
针对这一问题，研制出水平摘穗辊与可退让拨禾器组合式摘穗机构。
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