accretion

英 [əˈkriːʃn]

美 [əˈkriːʃn]

n.  积聚层; 堆积层; 堆积，积聚(过程)

复数：accretions　

GRE化学

BNC.22082 / COCA.17492

牛津词典

noun

• 积聚层；堆积层
  a layer of a substance that is slowly added to sth
• 堆积，积聚（过程）
  the process of new layers being slowly added to sth

柯林斯词典

• N-COUNT 增加物;添加物
  Anaccretionis an addition to something, usually one that has been added over a period of time.
  1. The script has been gathering editorial accretions for years.
     多年来该剧本一直在修改。
• N-UNCOUNT 添加；累积
  Accretionis the process of new layers or parts being added to something so that it increases in size.
  1. A coral reef is built by the accretion of tiny, identical organisms.
     珊瑚礁是由许多相同的微生物不断堆积而成。

英英释义

noun

• (law) an increase in a beneficiary's share in an estate (as when a co-beneficiary dies or fails to meet some condition or rejects the inheritance)
• an increase by natural growth or addition
  Synonym:accumulation
• (geology) an increase in land resulting from alluvial deposits or waterborne sediment
• (biology) growth by addition as by the adhesion of parts or particles
• (astronomy) the formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
• something contributing to growth or increase
  1. he scraped away the accretions of paint
  2. the central city surrounded by recent accretions

双语例句

• X-ray observations of iron in the accretion disks may actually be showing the effects of such a massive black hole as well.
  同时，铁的X射线对这种吸积现象的观察资料实际上也可以反映这种巨大黑洞的影响。
• This formation, called an accretion disk, may be very important in some stellar birth sequences.
  这种构成物即所谓吸积盘，它在恒星诞生的某些阶段可能是非常重要的。
• It is well known that accretion disks are hydrodynamic disks with anomalous viscosity.
  天体物理吸积盘是具有反常粘滞的流体盘。
• That implied elm trees may play an important role on the accretion and fixation of sand dunes.
  这表明榆树对当地沙丘的形成和固定起主要作用。
• Indicator of evolution history of early solar nebula& accretion and formation process of different type of meteorite parent body
  早期太阳星云演化历史的指示剂&不同类型陨石母体的吸积和形成过程
• The result has been 80 years since the first world war of a steady accretion of power to ministers.
  其结果是自第一次世界大战以来内阁大臣们的权力不断扩大的情况已有80年了。
• The ice accretion geometric characteristics have complex effects on airfoil aerodynamic coefficients.
  积冰几何形状对翼型气动系数的影响是复杂的。
• It is shown that magnetic fields in the Sun and astrophysical accretion disks are of a spatially intermittent nature.
  太阳和天体物理吸积盘中的磁场是一种空间间歇的磁流。
• Symbols tend to appear in clusters and to depend on one another for their accretion of meaning and value.
  虽然符号可能是结婚戒指或图腾柱的抽象形式，符号倾向于成群出现，取决于彼此之间的含意与价值的累加。
• A qualitative analysis of erosion and accretion in meandering streams using vortex
  利用涡旋定性分析弯曲河道的剥蚀和增生