main sequence star

the star used to be like the sun, a "main sequence" star that burns hydrogen by nuclear fusion, producing helium.

这颗恒星曾和太阳一样，是颗“主序星”（“mainsequence”）。它通过核聚变燃烧氢，从而产生氦。

Having carried on evolution model calculation from the main sequence star to the thermal pulsation AGB star for a 5M(?) star, such numerical calculation result agrees with the prediction of the new criterion.

恒星进行了从主序星到热脉动AGB星的演化模型计算，结果表明新判据能很好地反映5M（？）

confirmation of a planet circling a "normal" main-sequence star did not come until 1995.

直到1995年才确认了围绕”正常“主序星运行的行星。

Rotation effect has the great influence on star in the former stage of main sequence and in the latter stage of Red Giant through the angular velocity and the change of rotational angular velocity; turbulent pressure in the stage of AGB star. ( 3).

自转效应通过自转角速度和自转角速度的变化对恒星在主序星前期和红巨星后期的影响较大，而湍流压在AGB星阶段的影响较大。

Since the first affirmance of an extrasolar planetary system in pulsar PSR1257+ 12, and first discovery of a planet in a main sequence star, 51 Peg, in 1995, about half hundred of extrasolar planets have been discovered.

从1992年第一个确认了脉冲星PSR1257+12的行星系统以来，1995年确认主序星51Peg有一颗行星，至2001年5月，已经发现了60个太阳系外的行星系统。