20:用来对光学瞄准具进行枪膛归零（bore sight）的工具将它装在枪口，从上方的显示管可以看到枪管轴心线指向某个距离处的投影，然后根据这个影像，调整光学瞄准具的左右高低，必...
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bore-sight 视轴 ; 瞄准线
electrical bore sight 电轴瞄准轴
bore-sight error 瞄准误差
muzzle bore sight 炮口十字线
reflex bore sight 反光小孔瞄准
elevation bore sight potentiometer 高低零线调整电位计
以上来源于: WordNet
Being opposite to Qianjiang Tidal-bore Sighting City, we sincerely welcome friends in all circles to visit our company and enjoy the sight of Qianjiang Bore-the wonder of the world.
公司面对钱江观潮城，欢迎各界朋友莅临公司考察指导并观赏天下奇观——钱江潮。
Gun sights introduced early in the nineteenth century consisted of fixed front and rear sight points so adjusted that the line of sight across their tips was parallel to the bore of the gun.
十九世纪初的火炮瞄准具由炮身前后两个尖点构成，视线通过两尖点顶端就得出与火炮炮膛平行的瞄准线。
Lausus, his son, could not bear the sight, but rushed forward and interposed himself, while the followers pressed round Mezentius and bore him away.
他的儿子劳苏斯见状惨不忍睹，便挺身而出冲上前去，他的部下也一拥而上团团围住墨曾提乌斯，当即把他抬走。
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