| 释义 |
argonar‧gon /ˈɑːɡɒn $ ˈɑːrɡɑːn/ noun [uncountable]   argonOrigin: 1800-1900 Greek argos ‘lazy’; because it does not react chemically - In this case, it is the formation of the rock through volcanic activity, which drives off any argon formerly present.
- Physical trapping is likely to be about as effective for neon, argon and krypton.
- Some neon and argon is probably present as well.
- The first is to generate the molecules as gases, mix them with a large amount of argon and freeze the mixture.
- The ratios change over time as potassium undergoes radioactive decay and emits argon gas.
- The remaining 11 % of the 45K atoms decay to form the inert gas argon, 40Ar.
- The technique allowed him to measure the ratios of two elements, potassium and argon.
- Titan is unique in having a thick atmosphere made mostly of nitrogen, with some methane and possibly argon.
► Elementsaluminium, nounargon, nounarsenic, nounbarium, nounbase metal, nounbismuth, nouncadmium, nouncaesium, nouncalcium, nouncarbon, nounchlorine, nounchromium, nouncobalt, nouncopper, nounferrous, adjectivegold, noungold, adjectivegolden, adjectivehalogen, nounhydro-, prefixhydrogen, nouniodine, nouniridium, nouniron, nounisotope, nounkrypton, nounlead, nounlithium, nounmagnesium, nounmanganese, nounmercury, nounmolybdenum, nounnickel, nounnitrogen, nounoxygen, nounphosphorus, nounplatinum, nounplutonium, nounpotassium, nounprecious metal, nounradium, nounradon, nounselenium, nounsilicon, nounsilver, nounsilver, adjectivesodium, nounstrontium, nountin, nountin, adjectivetitanium, nountrace element, nountungsten, nounuranium, nounxenon, nounzinc, noun a colourless gas that is found in very small quantities in the air and is sometimes used in electric light bulbs. It is a chemical element: symbol Ar |