英语词汇“gunner's quadrant”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	gunner's quadrant
释义	gunner's quadrant noun : an instrument consisting of a graduated limb with a spirit level, and an arm by which it is applied to a cannon or mortar in adjusting the piece to the elevation for the desired range
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