首页英语词典HH英英释意

H

英 [eɪtʃ] 美[etʃ]
  • n. 英语字母中的第八个字母,小写为h
  • symb. 氢(化学元素)

英英释意


1. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10\-34 joule-second