To measure resolution, consider a line pair -> i.e. the wall is a line but to differentiate it, there must be a contrasting equal width along side.

我们可以把长城看作是一对线耦来测得分辨率，比如说把长城当作一条线来分辨，那么这条线两边都要以长城同等的宽度来分辨。

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It was verified by experiments and calculations that, in general, VBL in hard bubble walls are not generated by the way that one Bloch line pair is produced per pulse.

通过实验和计算，证明了硬泡畴壁中同号的VBL一般地说并非一个脉冲产生一对。

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Then using another convex lens and a micrometer eyepiece the altered parallel rays is focused, and the imaging size of line pair of collimator imaged on the another convex lens is measured.

用一辅助凸透镜与一测微目镜进行平行光束的会聚，测出准直管玻罗板线对在辅助凸透镜焦平面上所成像的大小；

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While a single, bed-width cushion creates an orderly line, a pair of bolsters one for each half of the bed makes more sense for bedmates with opposing propping needs.

WSJ: Bolster Cushions Win Best Supporting Rolls

In the lift line, you pair up with a bib of the opposite color, ride to the top, and the entrepreneur has a captive audience for 7 minutes to make his pitch.

FORBES: Rule #1 of Startup Management: Ask for the Order!

The company's rounding out its line up with a pair of audio devices, too -- the G430 and G230 surround and stereo gaming headsets.

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