| 释义 |
main sequence meinˈsi:kwəns 短语⁷⁹⁹⁷⁸⁺⁹
基本例句
主要序列,主星序
In comparison to their size on themain sequence, the stars now become giants.同它在主星序上的大小相比，恒星现在就成了巨星。
When a massive proto -star approaches themain sequence, its surface temperature is low and it can not ionize the ambient gas.当一个大质量原星接近主星序时，它的表面温度是低的，因而不能电离周围的气体。 |