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- Chemical alteration of a substance within the body, as by the action of enzymes. 生物转化体内物质的化学转化，如通过酶的作用
- Chemical alteration of a substance within the body,as by the action of enzymes. 生物转化体内物质的化学转化，如通过酶的作用。
- A gray, green, or brown mineral similar to mica, formed by chemical alteration of other minerals, such as cordierite. 块云母类似云母的灰色、绿色或棕色矿物，由其它矿经化学变化形成，如堇青石
- A gray,green,or brown mineral similar to mica,formed by chemical alteration of other minerals,such as cordierite. 块云母类似云母的灰色、绿色或棕色矿物，由其它矿经化学变化形成，如堇青石
- All added perfumes are IFRA-tested and admitted world-wide.Traces of a complexing agent prevent chemical alteration of the soap and do no harm to the skin. 并且符合生态学及环保要求、可再循环生产制作、无动物性试验、生物可降解产品；
- A device for burning or chemically altering unburned or partially burned carbon compounds in exhaust gases. 排气后燃器用以充分燃烧或从化学上改变废气中未完全燃烧或部分燃烧的含碳化合物的设备
- Chemical alterations of nucleotide bases are often removed by BER, as in G1 phase. 碱基的化学修饰通常在G1阶段由BER去除。
- Specifically, the researchers found that isual experience in the juenile brains triggered telltale chemical alterations in substances called histones that were not triggered in the adult brains. 此外，研究人员还意外发现这一视觉体验能够刺激幼鼠大脑里的组蛋白发生化学改变（修饰），而成年鼠则无改变。
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- Hydrocarbons have to be chemically altered to make useful products and materials. 碳氢化合物需改变化学结构;方能制成有用的产品或物料.
- We are doing a chemical experiment. 我们正在做化学实验。
- My major is the subject of chemical engineering. 我的专业是化学工程学。
- Ammonia is a chemical substance. 氨是种化学物质。
- A chemical derived from petroleum or natural gas. 石油化学制品从石油或天然气中提炼出的化学产品
- Beware how you handle the toxic chemical. 小心处理有毒的化学药品。
- The chemical can behave as an acid. 这种化学制品能起酸的作用。
- Some chemical compounds can be resolved by heat. 一些化学化合物可以通过加热分解。
- I am not familiar with chemical terms. 我不熟悉化学术语。
- He devoted his life to chemical research. 他一生从事化学研究。
