... pencil of parallel lines 平行线束 pencil of planes 面束 pencil of quadratic curves 二次曲线束 ...
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平面束 sheaf of planes ; pencil of planes ; [数] plane pencil ; axial pencil
调和面束 [数] harmonic pencil of planes
射影面束 projective pencils of planes
二次曲面束 [数] pencil of quadrics ; bundle of quadrics
超平面束 [数] pencil of hyperplanes
二次超曲面束 [数] pencil of quadric hypersurfaces
表面约束 Surface Constraint
结束面试 Ending an Interview ; Concluding the Interview ; at the end of interview
曲面束 Composed of pencils
千禧一代似乎面临着这样一个矛盾：一方面，他们代表着最无拘无束的一代，然而另一方面，他们却最注重风格和个人品牌。
Millennials, it seems, face the paradox of being the least formal generation yet the most conscious of style and personal branding.
这组人员设计了一个反射和干涉系统，将激光分成两束，分别对准抛光硅晶片的两面，将两束光限制在硅当中。
By splitting a laser beam and aiming each part onto opposite sides of a polished silicon wafer, the group engineered a system of reflection and interference that traps both beams in the silicon.
利用电子束离子源（EBIS）或者电子束离子陷阱（EBIT）产生的慢速高电荷态重离子束轰击金属靶面，离子束与靶面作用并复合辐射特征X射线；
The electron beam ion trap(EBIT) and the electron ion source(EBIS) are new instruments for the study of X-ray produced by very highly-charged ions when they interact with free electrons.
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