一条线索来自于主盘内恒星的金属丰度。
One clue comes from the metallicity of the disc's constituent stars.
银河系120000光年直径的主盘使它的其余部分相形见绌。
Spanning 120,000 light years, our galaxy's disc outshines the rest of the Milky Way.
银河系120000光年直径的主盘使它的其余部分相形见绌。
Spanning 120, 000 light years, our galaxy's disc outshines the rest of the Milky Way.
主盘包含着太阳及星系里其他大部分的恒星，当然还有美丽的旋臂。
The disc harbours the Sun and most of the galaxy's other stars, as well as the beautiful spiral arms.
贯穿整张图片的明亮水平线是银河系的主盘，太阳和地球就处于其中。
The bright horizontal line running the full length of the image is the galaxy's main disc - the plane in which the Sun and the Earth also reside.
根据实验结果给出了计算主盘表面平均对流换热系数的经验关系式。
An experimental correlation of the averaged heat transfer coefficient on the main surface is formulated.
什么？当你选西树硬盘做主盘时，你能用PC 3000找到硬盘吗？
What? Can you identify HDD for PC3000 when you select Master of WD HDD?
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。
Thus, the disc begins its existence with a steep metallicity gradient, like the one in the distant galaxy in Leo.
通过把连杆连接到包住曲柄销的一个主盘上，十二个气缸便可在同一个曲柄销上工作。
By attaching the connecting rods to a master disk surrounding the crankpin, as many as twelve cylinders have been made to work on a single crankpin.
因为我们看到的它还处于早期，这个结果表明螺旋星系主盘开始时有着很大的金属丰度梯度。
Because we see the galaxy when it was young, this result suggests spiral discs start off with steep metallicity gradients.
在这个模型下，一大团气体坍缩并在主盘中心形成大量恒星，它们在那里迅速增加着金属丰度。
In this model, a mass of gas collapses and creates lots of stars at the disc's centre, where the stars quickly boost the metallicity.
Benson说，这个高梯度的结果与一个久已有之但一直未被证实的想法相符，这个想法就是螺旋星系的恒星主盘是由内而外形成的。
Benson says that the steep metallicity gradient agrees with the long-standing but unconfirmed idea that spiral galaxies form their discs of stars from the inside out.
Benson说，这个高梯度的结果与一个久已有之但一直未被证实的想法相符，这个想法就是螺旋星系的恒星主盘是由内而外形成的。
Benson says that the steep metallicity gradient agrees with the long-standing but unconfirmed idea that spiral galaxies form their discs of stars from the inside out.
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