1.
The Study on Changes of Post-harvest Main Chemical Composition and Forcing Technique of Chicory Root;
菊苣根采后主要化学成分变化及软化技术研究
2.
Change of Components in Mixed Volatile Oil of Clove and Cassia Bark
丁香与桂皮挥发油混合后化学成分变化分析
3.
Changes of Chemistry Constituents of Decoction of Radix Paeoniae and Radix Glycyrrhizae Made Bydecoting Together and Single on Hplc
HPLC研究芍药甘草汤合煎与分煎的化学成分变化
4.
Study on the Fermentation and Chemical Ingredients Changes of Mulberry Vinegar
桑椹果醋的发酵技术及其化学成分变化研究
5.
Studies on Change of Chemical Compositions of Sun-cured Tobacco during Curing Process
红土晒烟调制期化学成分变化规律研究
6.
Changes of Chemical Components during the Aging Process of Flue-cured Tobacco and Their Relation to Aging Quality;
烤烟片烟醇化过程中化学成分变化及与醇化质量的关系研究
7.
The molecular constitution and chemical change of the precursor of the pigment from Peri- strophe baphica by LC-NMR technique
山蓝色素前体的分子组成和化学变化
8.
Studies on the Chemical Constituents、Quality and Changes of Caragana Sinica;
锦鸡儿化学成分、含量及其变化研究
9.
Changes of Main Wood Chemical Components during Brown-rot Decay by Wolfiporia cocos
茯苓褐腐过程中木材化学成分的变化
10.
Cluster Analysis on Chemical Component Changes of Flue-cured Tobacco Leaves in Shandong Tobacco Growth Regions
山东烟区烤烟化学成分含量变化及聚类分析
11.
changed the chemistry of its leaves,
它便会改变自己树叶的化学成分，
12.
Heating water does not change its chemical composition.
把水加热不会改变水的化学成分。
13.
Wrought aluminium and aluminium alloys--Chemical composition limits
GB/T3190-1996变形铝及铝合金化学成分
14.
Chemical Constituents of Paulownia tomentosa (Thunb.) Steud. var. tomentosa Inner Bark
毛泡桐(原变种)内桐皮的化学成分
15.
Chemical Compositions and Geographic Variation in Flowers and Fruits of Tilia amurensis
紫椴花和果实化学成分及其地理变异
16.
physical, chemical or biological alternation of the composition or quality of the waters
水的成分或质量的物理、化学或生物变化
17.
a chemical reaction,ie one causing changes in the structure of atoms or molecules
化学反应（造成原子或分子结构变化的反应）.
18.
Plant and animal life is sensitive to changes in the chemistry of the environment.
植物和动物体对环境化学成分的变化非常敏感。