chemically defined diet 制剂 ; 化学确定膳食 ; [畜牧] 化学规定饲料 ; 系化学组成明确膳
chemically defined culture medium 纯化学培养基
chemically defined mediurn 也称化学限定培养基
Chemically defined and serum-free 化学成分明确的无血清培养基
chemically defined medium 培养基 ; 化学成分确定的培养基
Chemically defined conditions 成分明确的培养条件
chemically defined culture system 成份明确的培养系统
Sulphides; polysulphides, whether or not chemically defined.
硫化物；多硫化物，不论是否已有化学定义。
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。
Stone, and later metal plate, was used as the image carrier, in which the image areas and non-image areas were defined chemically.
最初用石块作印版，后来才改用金属版。版面的印纹和非印纹用化学方法界定。
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