- quaternary base
- 季碱
English-Chinese chemistry dictionary (英汉化学大词典). 2013.
quaternary base
Look at other dictionaries:
Quaternary numeral system — Quaternary is the base num|4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number.It shares with all fixed radix numeral systems many properties, such as the ability to represent any real number with a canonical… … Wikipedia
Quaternary ammonium muscle relaxants — are quaternary ammonium salts used as drugs for muscle relaxation, most commonly in anasthesia. It is necessary to prevent spontaneous movement of muscle during surgical operations. Muscle relaxants inhibit neuron transmission to muscle by… … Wikipedia
Quaternary (disambiguation) — Quaternary (from Latin quaternarius ) is an adjective meaning consisting of or containing four each , but sometimes (as in geology) taken to mean fourth or fourth hand , where it is used in place of quartary to continue the sequence Primary,… … Wikipedia
quaternary — [kwät′ər ner΄ē, kwə tʉr′nə rē] adj. [L quaternarius < quaterni, four together, four each < quater, four times < base of quattuor,FOUR] 1. consisting of four; in sets of four 2. [usually Q ] designating or of the second and current… … English World dictionary
quaternary — /kwot euhr ner ee, kweuh terr neuh ree/, adj., n., pl. quaternaries. adj. 1. consisting of four. 2. arranged in fours. 3. (cap.) Geol. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era,… … Universalium
Quaternary — The Quaternary Period is the geologic time period after the Neogene Period roughly 2.588 million years ago to the present. The Quaternary includes two geologic epochs: the Pleistocene including Gelasian, that used to belong to the Pliocene and… … Wikipedia
quaternary ammonium base — ketvirtinė amonio bazė statusas T sritis chemija formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. quaternary ammonium base rus. четвертичное аммониевое основание … Chemijos terminų aiškinamasis žodynas
quaternary — I. adjective Etymology: Latin quaternarius, from quaterni four each Date: 1605 1. a. of, relating to, or consisting of four units or members b. of, relating to, or being a number system with a base of four 2. capitalized of, relating to, or being … New Collegiate Dictionary
Quater-imaginary base — The quater imaginary numeral system was first proposed by Donald Knuth in 1955, in a submission to a high school science talent search. It is a non standard positional numeral system which uses the imaginary number, 2 i , as its base. By analogy… … 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
List of numbers — This is a list of articles about numbers ( not about numerals). Rational numbers Notable rational numbers Natural numbers * There is no consistent and widely accepted way to extend cardinals beyond centillion (centilliard). Proposed systematic… … Wikipedia
