Explanation Similar in size to other large, bright spiral galaxies, IC 342 is a mere 7 million light-years distant in the long-necked, northern constellation Camelopardalis.

IC 342和其他大型明亮的螺旋星系的大小相当，这个在北方天穹细长的鹿豹座中的星系离我们只有7百万光年。

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In clast IC sediments particle size is an important factor.

在碎屑沉积物中，颗粒大小是个重要因素。

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So the measurement and control in the feature size of photomask can reduce the reject of IC and research on this area is very meaningful.

对掩模特征尺寸及缺陷进行检测可以减少集成电路的废品率，因此开展这方面的研究具有重要意义。

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That suggests a wave of star formation that travelled down the arms, set off by the collision with IC 4970, with the newest stellar neighbourhoods pushing the galaxy into the top spot in terms of size.

BBC: Galaxy crash sparks biggest spiral