- primary back reaction
- 初级反酌
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… … Medical dictionary
photochemical reaction — Chemical reaction initiated by absorption of energy in the form of visible (light), ultraviolet, or infrared radiation. Primary photochemical processes occur as an immediate result, and secondary processes may follow. The most important example… … Universalium
Barack Obama presidential primary campaign, 2008 — Infobox U.S. federal election campaign, 2008 committee = Obama for America campaign = U.S. presidential election, 2008 candidate = Barack Obama U.S. Senator 2005–present status = Announced February 10, 2007 Presumptive nominee June 3, 2008… … Wikipedia
ion-exchange reaction — ▪ chemical reaction Introduction any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions (ion)) that involves an exchange of one or more ionic components.… … Universalium
Combat stress reaction — Shell shock and shell shocked redirect here. For other uses, see Shell shock (disambiguation). Image from World War I taken in an Australian dressing station near Ypres in 1917. The wounded soldier in the lower left of the photo has a dazed… … Wikipedia
Mannich reaction — The Mannich reaction is an organic reaction which consists of an amino alkylation of an acidic proton placed next to a carbonyl functional group with formaldehyde and ammonia or any primary or secondary amine. The final product is a β amino… … Wikipedia
Welcome Back, Kotter — Sweathog redirects here. For the band, see Sweathog (band). Welcome Back, Kotter Format Sitcom Created by Gabe Kaplan … Wikipedia
chemical reaction — Any chemical process in which substances are changed into different ones, with different properties, as distinct from changing position or form (phase). Chemical reactions involve the rupture or rearrangement of the bonds holding atoms together… … Universalium
electrochemical reaction — ▪ chemistry Introduction any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances one a solid and the other a liquid. Under ordinary… … Universalium
Michael reaction — The Michael reaction or Michael addition is the nucleophilic addition of a carbanion or another nucleophile[1][2][3] to an alpha, beta unsaturated carbonyl compound. It belongs to the larger class of conjugate additions. This is one of the most… … Wikipedia
Proton–proton chain reaction — The proton–proton chain reaction dominates in stars the size of the Sun or smaller. The proton–proton chain reaction is one of several fusion reactions by which stars convert hydrogen to helium, the primary alternative being the CNO cycle. The… … Wikipedia