地磁水平分量（the horizontal component of terrestrial magnetism）的符号
海洛因（heroin）
abbr.(缩略词)
（铅笔心）硬的（=hard）
英英释义
Noun
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
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
the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
the 8th letter of the Roman alphabet
(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure;
"enthalpy is the amount of energy in a system capable of doing mechanical work"
例句
How do you pronounce p - h - l - e - g - m ? 你怎样读“p-h-l-e-g-m”这个单词?
Letter "O" stands for oxygen and "H" for hydrogen. 字母“O”代表氧，“H”代表氢。
Codex Committee on Food H hygiene. 国际食品卫生规范委员会。
Smoking is detrimental to your h. 吸烟有害健康。
The "h" in "honor" is not aspirated . honor. 中的h是不发音的。
