supersession

Since various, cause has not given a test to maneb zinc supersession thing second braces sulfurs urea (ETU).

由于各种因未对锌的谢物乙撑硫脲（ETU）进检测。

Fluorine is an important trace bio-essential element.Its deficiency or excess related to geological setting can cause organism distortion or supersession abnormality.

氟是重要微量生命,生环境中氟过量或缺乏均会导致机体畸变或谢异常。