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farmland pollution
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farmland pollution
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farmland pollution
农田污染
由于生产活动导致重金属以及一些难以除去的其他有毒物质进入农田,使得农田土壤中某些污染物指标超过国家农田土壤环境质量标准,或农作物中某些污染物指标超过国家农产品质量标准而导致农产品质量下降、农田生产力降低,甚至生态环境遭到破坏的现象。
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polarization reversal
polarization sensitive bolometer
polarization sensitivity
polarization spectrometer
polarization spectroscopy
polarization standard
polarization standard star
polarization state
polarization switch
polarization switching
polarization synthesis
polarization tensor
polarization time domain reflectometry
polarization transfer
polarization vector
polarization wave
polarization wave, polarized wave
polarize
polarized
polarized 3D display technology
polarized Abelian variety
polarized algebraic varieties
polarized algebraic variety
polarized and diffusion effect
polarized antenna
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