按含菌数的奶品分级的英文

bacterioloigic grading of milk

• 按:    press; push down
• 含:    keep in the mouth
• 菌:    mushroom a surname
• 数:    frequently; repeat ...
• 的:    4次方是 The fourth po ...
• 奶品:    milk products; dai ...
• 分级:    grade; classify; c ...