vs.

    backsight 对比 foresight
    分析 词典对比 组词对比
    (1).中国译典 backsight foresight
    n.
    后视, 表尺
    扩展解释:n. 【经贸】
    后视,后视,表尺缺口,瞄准口
    n.
    1. 【测】后视2. (枪之)表尺
    n.
    ①预见,先见(之明),远见;
    扩展解释:n. 【地质学】
    前视;前视,准星
    n. 【化学】
    预见,前视
    n.
    [U]1. 远见,先见之明,2. 深谋远虑,3. 展望,4. 【测】前视
    (2).维基词典 backsight foresight
    The rear sight of a firearm.
    A measurement or reading taken back towards a point of known elevation, used to calculate the height of the surveying instrument (theodolite, transit, total station).
    A measurement of a previously shot point, used to set the angle to zero when occupying a new position.
    To shoot a backsight.
    The ability to foresee or prepare wisely for the future.
    the front sight on a rifle or similar weapon
    a bearing taken forwards towards a new object
    (3).牛津词典 backsight foresight
    the sight of a rifle or other weapon that is nearer the eye of the person aiming.
    a sight or reading taken backwards or towards the point of starting.
    the ability to predict what will happen or be needed in the future
    the front sight of a gun.
    a sight taken forwards.
    (4).韦伯斯特词典 backsight foresight
    The reading of the leveling staff in its unchanged position when the leveling instrument has been taken to a new position; a sight directed backwards to a station previously occupied. Cf. Foresight, n., 3.
    The act or the power of foreseeing; prescience; foreknowledge.
    Action in reference to the future; provident care; prudence; wise forethought.
    Any sight or reading of the leveling staff, except the backsight; any sight or bearing taken by a compass or theodolite in a forward direction.
    Muzzle sight. See Fore sight, under Fore, a.
    简典