英语词汇“rubidium”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	rubidium
释义	ru·bid·i·um (r-bĭdē-əm) n. Symbol Rb A soft silvery-white metallic element of the alkali group that ignites spontaneously in air and reacts violently with water, used in photocells and as a getter in the manufacture of vacuum tubes. Atomic number 37; atomic weight 85.47; melting point 39.30°C; boiling point 688°C; specific gravity (solid) 1.532; valence 1, 2, 3, 4. See Periodic Table. [From Latin rūbidus, red; see reudh- in the Appendix of Indo-European roots.]
随便看	cut cut a fat hog cut-and-dried cut-and-dry cut-and-paste cut and run cutaneous cutaneously cutaway cut a wide swath cut back cutback cut bait cut both ways cutch cut corners cut down cutdown cut down to size cute cutely cuteness cutes cutesiness cutesy

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