helium 详细解释

helium

['hi:liəm]

n.氦

词形变化

简写符号: He |

英英释义

名词 helium:

a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

同义词:He, atomic number 2

补充

heliumhelium英:[ˈhi:ljəm] 美:[ˈhiliəm]n.1.〈化〉氦