Your phonecam is the only picture-taker you're packing these days, so make it better with these peepers that snap over the existing lens via a magnetic ring.
你的手机相机是你这些日子依赖唯一的照相工具，所以为了让相机上的”小眼睛“透过现有的镜头拍到更好的照片，在上面装个磁环吧。
By assuming the weak lens focal length expression to be the first term in a power series a simple and accurate formula can be derived for the objective focal length of a magnetic electron lens.
用假设弱透镜焦距表达式是一个幂级数中的第一项的方法，可以导出相当准确且便于实用的电磁电子透镜物镜焦距公式。
Users across the country by car the bearings electronics chemical fiber electroplating optical lens and glib pumps magnetic materials and other industries has been unanimously praised by users.
用户遍布全国各地的汽车、轴承、电子、化纤、电镀、眼镜镜片、油嘴油泵、磁性材料等行业，得到了用户的一致好评。
The use of laser cooling atomic beam technique can greatly reduce this aberration and makes the magnetic lens a useful tool in the field of atomic optics.
应用激光冷却技术能使这一影响减小，从而使磁透镜在原子光学领域得到更广泛的应用。
Moreover, applying the matrix method in the close axis optics leads directly to the expression of the focal distance of magnetic lens if the matrix is transmitted by the lens.
此外，应用类似于近轴光学中的矩阵方法，山磁透镜传输矩阵，直接导出了该磁透镜的焦距的表达式。
Use magnetic field lens again, two kinds of electron lens elaborate respectively below form and principle.
又用磁场透镜，下面分别阐述两种电子透镜的构成和原理。
The Hall element can sense the change of the magnetic field caused by moving the set of magnetic sensing elements so as to judge the moving state of the lens load bearing base.
霍尔传感器可感测该组感磁元件移动时所造成的磁场变化，以判断镜头承载座的移动状态。
In this paper, an integral equation method is developed for calculating the magnetic field produced by the iron-shielded lens of arbitrary shape.
本文采用积分方程法计算带极靴的任意形状的磁透镜。
Comparison of the focusing results of a hot atomic beam with a monochromatic cold atomic beam shows that the main factor affecting the imaging quality of the magnetic lens is chromatic aberration.
在比较了热原子束和单色冷原子束的会聚效果后得出结论：影响它成像的主要因素是色差。
Comparison of the focusing results of a hot atomic beam with a monochromatic cold atomic beam shows that the main factor affecting the imaging quality of the magnetic lens is chromatic aberration.
在比较了热原子束和单色冷原子束的会聚效果后得出结论：影响它成像的主要因素是色差。
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