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 this thesis we investigate the beam propagation and amphoteric refraction in a Uniaxially anisotropic crystal.
  本文在理论上研究了单轴晶体中的光束传输和正负折射现象。
• 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。
• 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。
• So far we have described the propagation of alternating magnetic fields.
  至此我们讨论了交变磁场的传播。
• 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。
• 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。
• The delay due to the carry propagation through the adder stages can be minimized when a carry-look-ahead scheme is used.
  采用越级进位方式可以减小逐级进位造成的延时。
• Plane Wave Propagation in One-Dimensional Quasi-periodic phononic Crystals;
  研究了声波在一维准周期系统中的传播问题。
• 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。
• He discussed the propagation of waves through the earth's interior.
  他探讨了地震波在地球内部的传播。