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Official automatic timing was introduced for the track events, as was the photo-finish camera.
径赛项目中还引进了官方的自动计时器, 另外还有电动终点摄影装置.
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So electronic starting platforms, photocells and photo finish are used to establish the placings.
因此,电子起跑台 、 光电管以及终点摄影技术都用来决定运动员的名次.
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The hair vellus can also finish counting is nothing of a good photo.
显然,一张照片仅仅是非常清晰,照的毫毛也能数完是称不上好照片的.
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