[ 'rædikəl ]发音: 用"radical"造句
- acetyl radical: 乙酰基
- acid radical: 酸根[基]。
- acyl radical: 酰基
- They wish to adopt more radical methods .
- All this is fiery radical writing .
- They arise because of the removal of radicals .
- He made a radical change in the plan .
- Both were new and radical experiments .
- especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem; "basal placentation"; "radical leaves"
- of or relating to or constituting a linguistic root; "a radical verb form"
- (used of opinions and actions) far beyond the norm; "extremist political views"; "radical opinions on education"; "an ultra conservative"
- markedly new or introducing radical change; "a revolutionary discovery"; "radical political views"
- arising from or going to the root or source; "a radical flaw in the plan"
- (linguistics) the form of a word after all affixes are removed; "thematic vowels are part of the stem"
同义词：root, root word, base, stem, theme
- a character conveying the lexical meaning of a logogram
- a person who has radical ideas or opinions
- (mathematics) a quantity expressed as the root of another quantity
- (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
同义词：group, chemical group
- an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule; "in the body free radicals are high-energy particles that ricochet wildly and damage cells"