The mathematical model of temperature and heating power field for level direct current electromagnetic continous casting of bar.
建立了水平直流电磁连铸铝圆坯温度场和热力场数学模型。
optical eye level finder
光学直视水平瞄准器
adjust the line of sight of (an optical instrument).
调整（光学仪器的）瞄准线。
either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration.
相交在一台光学仪器焦距平面的两条相互垂直的直线中的任何一条，用来瞄准或者校准。
To adjust the line of sight of(an optical device).
校准调整光学仪器瞄准器
Research on the Optical System of Avionic HMS/HMD;
机载头盔瞄准/显示器光学系统的研究
synchronous optical bombsight
同步光学轰炸瞄准具
A member of a naval gun crew who trains cannons horizontally.
方向瞄准手水平瞄准大炮的海军炮组成员
a sight used for aiming a gun.
用来瞄准枪的瞄准器。
The standard sighting equipment includes a non-magnifying collimating sight with "ring and dot" illuminated aiming reticule.
标准瞄准设备包括一个非直放大在望"光环和斑点"瞄准发亮镜头.
transmitter collimating optics
发射器准直光学装置
universal autocollimator
通用自动平行光管[瞄直仪]
Controller Design of a Airborne Electro-Optical Scanning Platform
一种机载光电跟瞄平台的控制器设计
diffraction optics head-up bisplay
衍射光学平视显示器
adjust the rear mirror, the focus of a camera, the sights of a gun
调准后视镜、 照相机的焦距、 枪炮的瞄准器
The archer holds the bow in his bow arm and draws back the target arrow at the anchor point with his drawing hand. He looks along the bow sight then releases the arrow at the target.
箭手用执弓臂握住弓，然后用拉弦手向后拉弓弦，直到满弓点，注视瞄准器然后射靶。
This includes a laser rangefinder coupled to a ballistic computer linked to the sights to ensure that the user aims the weapon accurately.
这包括一个与视线关联确保用户将武器正确瞄准目标并跟弹道计算机配对的激光测距仪。
cross hair or crosshair: Either of two fine strands of wire crossed in the focus of the eyepiece of an optical instrument and used as a calibration or sighting reference.
"十字丝:呈十字形交叉于光学仪器的目镜焦点上的两根细丝之一,用于校准或瞄准参考."
The gunsight has an infrared lens for night vision.
射击瞄准器装有用于夜间视力的红外线镜头。