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

• With kernel medium model, sound propagation characteristic in grain is studied.
  从颗粒介质模型出发，对粮食中声传播性质进行了研究。
• The propagation of spherical electromagnetic wave ( SEW) in a time-varying media of multidimensional space were studied.
  研究了球面电磁波在多维空间时变媒质中的传播特性。
• 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。
• 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。
• 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。
• This is formed by the cracks oscillating about the centerline in the direction of crack propagation.
  这是由于在裂纹的传播过程中，裂纹尖端沿着传播方向的中线上下振荡所形成的。
• Earth-ionosphere waveguide radio wave propagation for the production and transmission of radio broadcasts.
  地-电离层波导电波传播广播制造和传送的地方。
• Characteristics of wave propagation in grouted rockbolt were investigated with numerical simulation, experimental measurement and theoretical analysis.
  用理论分析、数值模拟和实验测试的方法研究了自由锚杆和锚固锚杆中的波传播特性。
• 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。
• The mechanism of the sympathetic inrush and the propagation in system are analyzed.
  本论文对和应涌流产生的机理及其在系统中的传播进行分析；