| 单词 | building block |
| 释义 | building block (once / 16038 pages) n WORD FAMILY building block: building blocks USAGE EXAMPLESThat’s at least a building block leading into Tuesday’s rematch in San Jose. Los Angeles Times(Jan 02, 2017) But for some companies, your medications, test results and hospital records are the building blocks of a multinational business. Seattle Times(Jan 01, 2017) Two building blocks to raise productivity are tax reform and regulatory reform. New York Times(Dec 27, 2016) 1n a block of material used in construction work Hypo|Hyper ashlar a rectangular block of hewn stone used for building purposes breeze block, cinder block, clinker blocka light concrete building block made with cinder aggregate headstone, key, keystonethe central building block at the top of an arch or vault voussoirwedge-shaped stone building block used in constructing an arch or vault coign, coigne, quointhe keystone of an arch building material material used for constructing buildings 2n a single undivided natural thing occurring in the composition of something else Syn|Hypo|Hyper unit chain, chemical chain (chemistry) a series of linked atoms (generally in an organic molecule) couple(physics) something joined by two equal and opposite forces that act along parallel lines unit cellthe smallest group of atoms or molecules whose repetition at regular intervals in three dimensions produces the lattices of a crystal chemical group, group, radical(chemistry) two or more atoms bound together as a single unit and forming part of a molecule molecule(physics and chemistry) the simplest structural unit of an element or compound closed chain, ring(chemistry) a chain of atoms in a molecule that forms a closed loop dipolea pair of equal and opposite electric charges or magnetic poles separated by a small distance dipole moleculea molecule that is a permanent dipole long chain, long-chain molecule(chemistry) a relatively long chain of atoms in a molecule open chaina chain of atoms in a molecule whose ends are not joined to form a ring protein moleculeany large molecule containing chains of amino acids linked by peptide bonds acyl, acyl groupany group or radical of the form RCO- where R is an organic group alcohol group, alcohol radicalthe chemical group -OH aldehyde group, aldehyde radicalthe chemical group -CHO alkyl, alkyl group, alkyl radicalany of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons allyl, allyl group, allyl radicalthe univalent unsaturated organic radical C3H5; derived from propylene amino, amino groupthe radical -NH2 amyla hydrocarbon radical that occurs in many organic compounds azido group, azido radicalthe univalent group N3- derived from hydrazoic acid azo group, azo radicalthe bivalent group -N=N- united to two hydrocarbon groups benzyl, benzyl group, benzyl radicalthe univalent radical derived from toluene benzoyl group, benzoyl radicalthe univalent radical derived from benzoic acid arsenic group, cacodyl, cacodyl group, cacodyl radicalthe univalent group derived from arsine carbonyl groupthe bivalent radical CO carboxyl, carboxyl groupthe univalent radical -COOH; present in and characteristic of organic acids coenzymea small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes chromophorethe chemical group that gives color to a molecule cyanide group, cyanide radical, cyano group, cyano radicalthe monovalent group -CN in a chemical compound EDTA, ethylenediaminetetraacetic acida complex molecule used medically to chelate metal ions in cases of lead or heavy metal poisoning glyceryla trivalent radical derived from glycerol by removing the three hydroxyl radicals hydrazo group, hydrazo radicalthe bivalent group -HNNH- derived from hydrazine hydroxyl, hydroxyl group, hydroxyl radicalthe monovalent group -OH in such compounds as bases and some acids and alcohols ketone groupa group having the characteristic properties of ketones macromolecule, supermoleculeany very large complex molecule; found only in plants and animals methylene, methylene group, methylene radicalthe bivalent radical CH2 derived from methane propyl, propyl group, propyl radicalthe monovalent organic group C3H7- obtained from propane butyla hydrocarbon radical (C4H9) nitro groupthe group -NO3 nitritethe radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid) uranyl, uranyl group, uranyl radicalthe bivalent radical UO2 which forms salts with acids vinyl, vinyl group, vinyl radicala univalent chemical radical derived from ethylene thing a separate and self-contained entity |
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