The time differences of a simultaneous initiation device including the initiation time differences of the detonators, build-up time differences of the detonation waves of the boosters and finally the main charge can be measured by the distances of the Dautriche line grooves imprinted in a target block-mild steel disc-by the intersection of detonation waves. Accuracy time differences of better than 0.1 μs can be achieved by carefully arranging the test set-up.%同步起爆装置的时间差、包括不同雷管的起爆时间差、传爆药爆轰波成长的时间差以及爆轰波最后到达主炸药的时间差,可通过印在柔性圆盘钢靶板上的道氏沟槽线的距离来测量,测量误差小于0.1 μs.
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