Milkin米尔金milkn.奶；牛奶；乳汁v.挤乳；产乳；榨取milk culture-medium[医] 牛奶培养基(脱脂)milk collecting center牛乳凝固试验milk-transfer system输奶系统milk extruding machine挤奶机milk production traits产奶性状milk sterilizing plant消毒牛奶加工厂milk clotting activity净乳机milk let-down reflex乳汁释放反射milk products industry高产乳品业milk-clotting enzyme凝乳酶