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Radio galaxy is also a strong red external source and X-ray source.
射电星系同时也是强的红外源和X射线源。
youdao
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The X-ray source used in this experiment is particularly prepared.
用于泡沫材料密度测量的X射线源是特制的激发源。
youdao
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The X-ray source used in this experiment is particularly prepared.
用于泡沫材料密度测量的X射线源是特制的激发源。
youdao