外部链接:
英德
有道
百度
谷歌
图片
维基
百科
background emission
背景辐射
物
background emission
background equivalent...
background equivalent...
background exposure
background factor
background fade-in
background film
background fluctuation
background fluctuations
background fluorescence
background fog
background genotype
background gradient s...
background hump
background illuminance
background illumination
background image
background images
background impurity
background indensity
background information
background informatio...
background ink
background intensity
background interference
background internal f...
background ion
background ions
background irradiation
background Iuminescence
background job
background knowledge
background level
background light
background lighting
background limited in...
background loop
background loudspeaker
background luminance
background luminescence
background mass spectrum
background material
background measuremen...
background measuremen...
background mode
background modulation...
background monitor
background monitoring
background music
background noise
background noise level
background noise of c...
background noise photon
background of cloth
background of invention
background of mass sp...
background partition
background photon flu...
Background picture
background plate
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