常見(jiàn)例句Methods By tryosin and DNA enzyme digest methods, we observed the human beings chorial trophcytes with light microscope and electronic microscope. 方法應(yīng)用胰蛋白酶／DNA酶消化法進(jìn)行消化，經(jīng)光鏡和電鏡觀察。 返回 tryosin