| 单词 | helium |
| 释义 | helium noun[U] uk/ˈhiː.li.əm/us/ˈhiː.li.əm/(symbolHe)achemicalelementthat is agaslighterthanair, that will notburnand is used inballoons,airships, and sometypesoflights 氦Chemical elements
helium| American Dictionaryhelium noun[U] us/ˈhi·li·əm/agas, one of thechemicalelements, that islighterthanairand will notburn Examplesofheliumhelium Therefore, the thermodynamic properties of pure hydrogen orheliumcan be calculated directly with the help of a relatively simple interpolation code. From theCambridge English Corpus Campers choose the colors that are meaningful to them and counselors blow upheliumballoons. From theCambridge English Corpus Moreover, in models withhelium(and other ions) the thermal force in the steep transition region may play a role in determining the coronal abundances. From theCambridge English Corpus At later times, temperature profiles in theheliumcase reflect the more complex shock history in theheliuminterior. From theCambridge English Corpus Stopping power of denseheliumplasma for fast heavy ions. From theCambridge English Corpus The simulations star t withheliumin its ground state at room temperature. From theCambridge English Corpus It is ahelium-neon based, one colour, three beam system, capable of measuring two components of velocity using light polarization for discrimination. From theCambridge English Corpus Insects were caught in a tapering net suspended several metres below an aerodynamically shaped,helium-filled balloon (blimp) attached to a lightweight motorized winch. From theCambridge English Corpus A parametric potential for ions fromheliumto iron isoelectronic sequences. From theCambridge English Corpus The calculated solutions to the air andhelium-sphere problems are, therefore, still applicable. From theCambridge English Corpus The bottom panel shows the relative abundance ofheliumions with respect to the protons. From theCambridge English Corpus The results may prove to be of some value in a macroscopic model of liquidheliumbased on hydrodynamical principles. From theCambridge English Corpus Heliumwas used as a carrier gas at a constant flow of 0.98 ml/min. From theCambridge English Corpus The nitrogen andheliumgases used in the ejection studies were fed into the model via a pipe within the inflow water pipe. From theCambridge English Corpus As a result, heavyheliumpenetrates onward with a fingerlike structure. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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