A steep gradient entrance 陡峭的入口坡度
There is a steep gradient in survival by age, with younger women having a better prognosis (Figure 3.2).
在年龄相关组中生存率曲线呈现了斜坡式的变化,显示更年轻的妇女有更好的预后(表3.2)。
Thus, the disc begins its existence with a steep metallicity gradient, like the one in the distant galaxy in Leo.
因此,主盘在形成伊始有一个很大的丰度梯度,就像遥远的狮子座里的那个星系那样。
In addition, last year other astronomers reported a steep metallicity gradient in an even farther galaxy, but that galaxy is not a spiral, so its relevance to the Milky Way is less clear.
另外,去年有其他天文学家报告称在一个更远的星系中发现了较大的金属丰度梯度,但那个星系不是螺旋星系,所以它与银河系的关系就没有那么明确了。
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