propagation

英 [ˌprɒpə'ɡeɪʃ(ə)n]

美

n.  传播; 扩展; 宣传; 培养

复数：propagations　

CET6GRE医学

BNC.12741 / COCA.15569

柯林斯词典

• VERB 宣传；传播；使普及
  If peoplepropagatean idea or piece of information, they spread it and try to make people believe it or support it.
  1. They propagated political doctrines which promised to tear apart the fabric of British society.
     他们鼓吹能颠覆英国社会结构的政治学说。
• VERB 繁殖，培植（植物）
  If youpropagateplants, you grow more of them from the original ones.
  1. The easiest way to propagate a vine is to take hardwood cuttings...
     栽培葡萄最简便的方法就是硬条扦插。
  2. The pasque flower can be propagated from seed.
     欧白头翁可以通过种子进行繁殖。

英英释义

noun

• the act of producing offspring or multiplying by such production
  Synonym:generationmultiplication
• the spreading of something (a belief or practice) into new regions
  Synonym:extension
• the movement of a wave through a medium

双语例句

• If a plant has spotted or crinkled leaves, do not use it for propagation.
  如果植物的叶子有斑点或者萎缩，就不要用来繁殖。
• Like light waves, acoustic ( sound) waves are characterized by a frequency, wavelength and propagation speed.
  声波就和光波一样，是以频率、波长和传播速度为其特徵。
• In acoustics he studied the propagation of sound and musical consonance and dissonance.
  在声学中，他研究了声的传播和音乐的和谐与不和谐。
• Numerical study on effect of joints on blasting wave propagation in rock mass;
  在实验的基础上，研究了电磁场对瓦斯爆炸过程中火焰传播和爆炸波的影响。
• The sound propagation in duct with non-locally reacting liner is discussed in this paper.
  本文对声波在空腔非局域反应声衬管道内的传播进行了研究。
• The propagation of stress waves in solids can be considered as a part of the field of acoustics or ultrasonics depending on the conditions.
  应力波在固体中的传播，根据其条件可视为声场或超声场的一部分。
• In this paper, the elastic wave propagation in honeycomb materials is investigated based on the dispersion relations.
  通过研究蜂窝材料的弹性波频散关系，分析了其弹性波传播特性。
• We consider the propagation of the interface phonons in the active core of a quantum cascade laser.
  研究了量子级联激光器有源核中界面声子的色散关系和静电势分布。
• The behaviours of fracture, fatigue and fatigue crack propagation in a cast magnesium alloy are systematically studied.
  本文系统地研究了铸造镁合金的断裂，疲劳和疲劳裂纹扩展性能。
• This paper has investigated the propagation of relativistic electron beams ( REB) in magnetized plasmas.
  本文研究了相对论电子束在磁化等离子体中的传输。