acceleration

CET-4 大学 FREQ #17496 ★☆☆☆☆

n. 加速, 促进, 加速度 [化] 加速度

发音

US /əkˌsɛl.əˈɹeɪ.ʃən/

词形变化

accelerations 复数 accelerations

别名

accel accel. acc. a.

教材释义与例句

名词

加速，促进； 加速度

释义与例句

n.
  1. 1.

    The act of accelerating, or the state of being accelerated; increase of motion or action; as opposed to retardation or deceleration.

    加速

    不可数 可数

    A falling body moves toward the earth with an acceleration of velocity.

  2. 2.

    The amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).

    加速度

    可数 不可数

    The boosters produce an acceleration of 20 metres per second per second.

  3. 3.

    The change of velocity with respect to time (can include deceleration or changing direction).

    加速度

    可数 不可数 物理
  4. 4.

    The advancement of students at a rate that places them ahead of where they would be in the regular school curriculum.

    可数 不可数

词汇关系

名词

同义词 2

quickening speedup

反义词 1

deceleration

上位词 7

change speed rate speeding hurrying modification alteration

下位词 5

pickup getaway precipitation angular acceleration centripetal acceleration

相关短语

acceleration clause [经] 提前偿付条款 acceleration clauses acceleration of gravity [化] 重力加速度 acceleration principle [经] 加速理论 acceleration lane acceleration lanes acceleration of freefall angular acceleration 角加速度 plasma acceleration proper acceleration [化] 固有加速度 plasma wakefield acceleration Planck acceleration hardware acceleration Great Acceleration centripetal acceleration [化] 向心加速度

词源

Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *kel-der. Latin celer Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Latin -ō Latin celerō Latin accelerō Proto-Indo-European *-tisder. Proto-Italic *-tjō Latin -tiō Latin accelerātiōder. English acceleration First attested in 1531. From French accélération or more likely directly from Latin accelerātiō (“a hastening, acceleration”). Equivalent to accelerate + -ion.

来源：wiktionary