| 单词 | atomic number 6 |
| 释义 | atomic number 6 (extremely rare) n WORD FAMILY atomic number 6 n an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds Syn|Hypo|Hyper C, carbon fullerene a form of carbon having a large molecule consisting of an empty cage of sixty or more carbon atoms carbon 14, radiocarbona radioactive isotope of carbon chara charred substance charcoal, wood coala carbonaceous material obtained by heating wood or other organic matter in the absence of air carbon black, crock, lampblack, smut, soota black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink activated carbon, activated charcoalpowdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons black lead, graphite, plumbagoused as a lubricant and as a moderator in nuclear reactors adamant, diamondvery hard native crystalline carbon valued as a gem lead, pencil leadmixture of graphite with clay in different degrees of hardness; the marking substance in a pencil buckminsterfullerene, buckyballa spheroidal fullerene; the first known example of a fullerene carbon nanotube, nanotubea fullerene molecule having a cylindrical or toroidal shape animal black, animal charcoal, bone black, bone charblack substance containing char in the form of carbonized bone; used as a black pigment black diamond, carbonadoan inferior dark diamond used in industry for drilling and polishing pencilgraphite (or a similar substance) used in such a way as to be a medium of communication snuffthe charred portion of a candlewick chemical element, element any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
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