H

名词 h:

1. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
   同义词：hydrogen, atomic number 1
2. a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second
   同义词：henry
3. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
   同义词：Planck's constant
4. the 8th letter of the Roman alphabet
   同义词：letter h
5. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
   同义词：heat content, total heat, enthalpy

h 或 H

n.（名词）
【复数】 h`s 或 H`s
The eighth letter of the modern English alphabet.
H字母：现代英语字母表中的第八个字母
Any of the speech sounds represented by the letterh.
H的发音：字母h 所表示的读音
The eighth in a series.
序列中的第八
Something shaped like the letter H.
H形物：形状象字母H的物体

h
h 2
NONE（无词性）
The symbol for Planck`s constant
元素Planck`s constant的符号

h
h 3
abbr.（略语）
Also h. Hit.
也作 h. Hit.
Hour.
Hour.