normal strain meaning in Chinese

垂直应变
定向应变
法向形变
法向应变
正应变

The tested isozymes included esterase ( est ) 、 superoxide dismutase ( sod ) 、 malate . dehydrogenase ( mdh ) 、 malic enzyme ( me ) 、 glutamate dehydrogenase ( gdh ) 、 peroxidase ( per ) and alcohol dehydrogenase ( adh ) . there were obvious differences between the normal strain and its degenerative strain in est 、 mdh 、 me 、 sod . the zymotype were the same in the other isozymes . the results were not only used to test the degenerative strain at young stage , but also as the theoretical base to study the genetic mechanism of the degenerative strain
而其余四种酶在正常菌株和退化菌株中酶谱一致。本研究不仅可以作为菌株退化早期鉴别的手段之一，而且为进一步研究菌种退化遗传机理提供了蛋白质水平上的一些理论依据。