Occur period

• 发生期

Occur period的用法和样例：

例句

1. This paper studied the morphological characteristics,germination period and ecological environment of Truffle,and first reported the test for physiology property of Truffle.
   本文研究了块菌的形态特征，发生期及其生态环境，并首次报道了川产块菌的生理特性试验研究。