给出了低振幅双光子屏蔽光伏亮和暗孤子的解析表达式，并推到出了孤子宽度的显式表达式。
Then, the analytical expressions for both the bright and dark low-amplitude two-photon screening-photovoltaic spatial solitons in photorefractive crystals were obtained.
这为13脚提供了5伏的电压，正是这个电压使LED灯亮。
This supplies 5 volts to pin 13. That creates a voltage difference across the pins of the LED, and lights it up.
用数值方法分析了平行传播异色光伏暗孤子之间及亮暗孤子之间的相互作用。
The parallel interaction between two photovoltaic spatial solitons of dark and dark as well as dark and bright with different wavelengths is investigated by numerical method.
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