retardation
英 [,ri?tɑ?'de???n]
美[,ritɑr'de??n]
- n. 阻滯；遲延；妨礙
詞態(tài)變化
動(dòng)詞:?retard;
英文詞源
- retardation (n.)
- early 15c., "fact or action of making slower in movement or time," from Latin retardationem (nominative retardatio) "a delaying," noun of action from past participle stem of retardare "to make slow, delay, keep back, hinder," from re- (see re-), + tardare "to slow," related to tardus "slow, sluggish" (see tardy). Sense of "educational slowness" is from 1907.
雙語例句
- 1. Asbestos reinforcement confers excellent flame retardation properties on a composite.
- 石棉增強(qiáng)材料使復(fù)合材料具有優(yōu)異的防火性能.
來自辭典例句
- 2. The theory confirms the increase in the retardation effect with decrease in particle size.
- 理論證實(shí),隨著顆粒尺寸的減小,這一減速效應(yīng)將增大.
來自辭典例句
- 3. It is therefore not surprising that self - retardation is not well - documented in the systems we are considering.
- 因此,在我們所考慮的體系中,自緩聚作用尚未完全證實(shí)是不足為奇的.
來自辭典例句
- 4. Most children with Down syndrome have mild - to - moderate mental retardation.
- 大多數(shù)唐氏綜合癥兒童有輕度到中度的弱智.
來自互聯(lián)網(wǎng)
- 5. The suggestion of development and extent of fire retardation PP was made.
- 提出了發(fā)展和推廣阻燃聚丙烯纖維的有關(guān)建議.
來自互聯(lián)網(wǎng)