windagen.
英 'wɪndɪdʒ | 美 'wɪndɪdʒ
中文n. 偏差（子弹因风而生的）；[电] 游隙（炮筒内径和炮弹间的空隙）；[军] 风力影响，风力修正量
词根词源
windage (n.)1710, "allowance of space between the projectile and the diameter of the tube of a firearm," from wind (n.1) + -age. Meaning "allowance for wind deflection" is from 1867.
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