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单词 sound and flash ranging
释义 sound and flash ranging
[¦sau̇nd ǝn ¦flash `rānj·iŋ]
ORDNANCE
Two distinct and separate but supplementary systems of locating enemy weapons and, secondarily, adjusting friendly counterfire: by observation by sonic devices on the sound produced by the enemy weapon in firing or by the friendly projectile in exploding; or by visual observation of the flash produced or of the point of burst of the enemy weapon or friendly projectile.
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