The antler of a hart, formerly used as a source of ammonia and in smelling salts.
雄鹿的鹿角，过去主要用作制作氨及嗅盐的原料。
Description Ammonia (NH 3) or its ion form ammonium (NH 4 +) is an important source of nitrogen for living systems.
产品说明对生命机体来说氨(NH3)或铵离子形式(NH4 +)是氮的重要来源。
This paper states ammonia's physical and chemical characteristics, its source, the damage to hu- man body and effect factors of ammonia pollution. It also states its prevention method.
本文主要通过对氨的物理化学性质、室内空气中氨的主要来源、氨对人体的危害及室内空气中氨污染的影响因素及防治方法这几个方面来讲述。
The method has the advantages that: the emission of ammonia nitrogen is reduced from the source, and the acephate is effectively separated and recovered;
本发明的方法从源头上减少氨氮排放，能有效地分离回收乙酰甲胺磷；
All the 4 strains of cellulolytic bacteria and mixed rumen microbes can grow in the chemically defined medium with ammonia-nitrogen or peptide or amino acid as the sole nitrogen source.
所选4株菌和混合瘤胃微生物既能在氨氮为唯一氮源的合成培养基中生长，又能在含有肽和氨基酸的合成培养基中生长。
All the 4 strains of cellulolytic bacteria and mixed rumen microbes can grow in the chemically defined medium with ammonia-nitrogen or peptide or amino acid as the sole nitrogen source.
所选4株菌和混合瘤胃微生物既能在氨氮为唯一氮源的合成培养基中生长，又能在含有肽和氨基酸的合成培养基中生长。
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