主要神经环的组织原已有详细描述.The histology of the main nerve rings has been described in detail.它仍然是在反应中生成过渡状态的杂环的实例.It represents an example of a heterocycle being formed as transient species.控制可以是开环的也可以是闭环的.This control may be clos...

“环的”的英语可以翻译为：[医] cyclic，annular ...