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IC4703
释义
IC4703
Encyclopedia
理学
原行星状星云
释
Eagle Nebular;IC4703
鹰状星云
位于巨蛇座的一个亮星云。星表中的编号为M16和IC4703。因其结构外形如同一只鹰而得名。标准历元J2000的坐标是赤经18h18m47.9s,赤纬-13°48′24″。
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reactive sintering
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reactivity coefficient
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reactivity-insertion accident
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reactivity ratio
reactivity temperature coefficient
reactivity void coefficient
reactology
reactor
reactor chemistry
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