hiiCOCA¹¹⁶²³⁵BNC²³⁶²¹³⁺¹ 基本例句 abbr.健康保险学会=Health Insurance Institute One result is that M101, also called the Pinwheel Galaxy, has several extremely bright star- forming regions called HII regions spread across its spiral arms. 其中一个结果就是被称为风车星系的 M101内有数个极度明亮的恒星形成区域也被成为 HII区域分布在星系的旋臂上。 bbs.astron.ac.cn