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硝酸盐氮
agric. nitrate nitrogen (MNO₃)
anim.husb. nitrate N
desert. nitric nitrogen
ecol. nitrate nitrogen
硝酸盐-氮
water.res., ecol. nitrate-nitrogen
硝酸盐 氮
: 8 phrases in 3 subjects
Chemistry2
Technology2
Water resources4