蛋白胨

yíng yǎng jià zhí jiào gāo de dàn bái dòng

营养价值较高的蛋白胨

nutrient-rich peptone

dàn bái dòng hé niú ròu gāo róng yè

蛋白胨和牛肉膏溶液

peptone and beef extract solution