The paper chromatography-mottle elution chronometry is established which is a simple and convenient and accurate method of quantitatively determining L-leucine.

建立比较简便、准确的定量测定发酵液中L-亮氨酸的"纸谱—斑洗脱比法"。

Sun Blotch is a viral disease that causes yellowed streaking of young stems, mottling and crinkling of new leaves and occasional deformation of the fruit.

孙腐病是病毒性疾病,造成泛黄裸茎,斑和皱纹的新叶和偶尔变形果.