“occurence”簡單造句，occurence造句子

This paper investigates the occurence of plastic now layer and formative mechanism of metal cutting burrs.

This paper deals with the frequency, seasonal character, regional distribution of drought occurence and recurrence interval of drought occurence lasting for years.

However, we should also take into consideration that the article is mainly discussing fire incidence and occurence, meaning number of fires and not the size of emissions.

The authors surveyed the transformation of the intermediate and low yielding farmland, and analysed the causes of occurence of the intermediate and low yielding farmlands in Zhenan County.

The metabolic change of thyroid hormone after Se deficiency or iodine deficiency may be related to the occurence of Keshan disease.