活性

• Metabolic activity quickly develops in the cells of the embryo and the aleurone layer .
  胚细胞和糊粉层中的代谢活性立即活跃起来。
• Derivatives of bromine are much more active than the corresponding one of chlorine .
  溴的衍生物的活性要比相应的氯的衍生物大得多。
• The first of the reactive intermediates to be considered is known as a "carbocation" .
  要研究的第一种活性中间体叫做“正碳离子。”
• The first of the reactive intermediates to be considered is known as a "carboniumion" .
  要研究的第一种活性中间体叫做“正碳离子”。
• Two basic types of cholinesterase activity are found in the tissues of all animals .
  所有动物的组织内部都有两种基型的胆碱酯酶活性。
• This is especially true for activity tests, less so for physical tests .
  这对于活性测试而言是非常确实的，而对物理性能测试则差一些。
• At these levels carbon does not precipitate like oxygen, nor is it electrically active .
  这些浓度下碳既不象氧一样沉淀，也不呈电活性。
• Microfloral activity in worm may have an important effect on soil crumb structure .
  蚯蚓类中微生物群落活性对土壤团粒结构可起重要作用。
• Ethylene and trans-dichloroethylene are both inactive in the infra-red in this region .
  乙烯和反式二氯乙烯在红外光谱的这个区域都无活性。
• One of the hydrogen atoms of the active methylene group is replaced with a cyclooxy group .
  活性亚甲基上的一个氢原子是被环氧基所取代的。