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

• Coral is formed by a process of accretion.
  珊瑚是通过累积作用而形成的。
• Infalling gas may first collide not only with itself but with an accretion disk of swirling material surrounding the black hole.
  正在下落的气体不但会先和自身发生碰撞，还会和黑洞周围盘旋着的物质吸积盘相互碰撞。
• Both halftone dot accretion and relative contrast are the important parameters of printing quality control system based on density.
  网点增大和相对反差是基于密度的印刷质量控制体系中两个重要的控制参数。
• 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。
• 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。
• 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。
• 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。
• For example, some accretion disks in binary star systems occasionally undergo large, temporary increases in luminosity.
  例如，有些双星系统里的吸积盘，偶尔会短暂地大幅增加亮度。
• A numerical simulation approach is presented to simulate the ice accretion on airfoil which can deal with the ice accretion under various atmospheric conditions.
  提出了一种适用于各种结冰气象条件下飞机机翼结冰过程的数值模拟方法。
• 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。