“sighting bar”的概念、定义、翻译、参考文献-科学参考

单词	sighting bar
释义	sighting bar [`sīd·iŋ ´bär] ^ORDNANCE Wooden device with enlarged front and rear sight, eyepiece, and a movable target, used for training in the proper method of aiming a small-arms weapon; the eyepiece forces the student to hold the eye in proper position; because of the size of the sights, errors of aiming are very apparent.
随便看	explicit symmetry breaking exploded file exploded view exploding bridge wire exploitation exploration exploratory well exploring coil explosimeter explosion explosion breccia explosion crater explosion door explosion method explosion rupture disk device explosion tuff explosion welding explosive explosive-actuated device explosive bolt explosive cladding explosive decompression explosive disintegration explosive echo ranging explosive evolution

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