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

• 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。
• The propagation of a linear elastic crack was simulated by displacement discontinuity method ( DDM).
  采用位移不连续法（DDM）对裂纹的扩展进行了数值模拟。
• Optical effects in intersectional silicon waveguide switch are investigated by using beam propagation method.
  运用光束传播法对硅交叉波导全内反射光开关中的光学效应进行了详细分析。
• 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。
• Two new medium parameters related to acoustic attenuation are introduced and an acoustic propagation coefficient is defined.
  本文引入两个与声衰减有关的介质参量，定义了声传播系数；
• The relation between the chirp in phase of soliton pulse and soliton propagation is discussed in this paper.
  讨论了光孤子传输中，由脉冲包络的相位变化产生的啁啾与孤子传输的关系。
• The influence of radio propagation on the radio coverage uniformity in mobile communications systems is analyzed.
  本文分析了移动通信系统中电波传播对覆盖均匀性的影响。
• In this paper, the wave propagation characteristics of infinite cylindrical shells with circumferential surface crack are investigated.
  研究了振动波在含有环向表面裂纹的无限长圆柱壳中的传播特性。
• 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。
• Numerical simulation and experimental testing are used to study wave propagation characteristics in grouted rock bolt.
  采用数值模拟和实验模拟的方法对锚杆–锚固体系中的波动特征进行研究。