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wavelength converter
波长转换器
将光信号从当前波长转换到另一个波长的光交换器。由于有新频率分量的产生,波长转换是一种非线性变换。波长转换器主要用于波分复用网络。
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Police Scotland
police sign
police's law-abidingness
police social supervision
police specialization movement
police sports
Police Story
Police Story series
police sub-stations and police booths
police-tax department cooperation
police technology
police testifies in the courtroom
police training
police training programme
police uniform
police vehicles
police vessels
police vocational values
police warning
police weapon equipments
policies for disaster risk reduction of agriculture
policies for the development of agricultural science and technology
policies of agricultural pollution treatment
policies of returning marginal farmlands to forests
policies of utilization,restriction and reform
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