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非蛋白氮 fēi dàn bái dàn
chem. non proteic nitrogen; NPN; non-proteinaceous nitrogen
desert. non-protein nitrogen
sport., med. nonprotein nitrogen
非蛋白 [质]氮
agric. non-protein nitrogen
非蛋白[质]氮
agric. non-protein nitrogen
非蛋白氮
: 4 phrases in 2 subjects
Animal husbandry3
Desert science1