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

• 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。
• 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。
• Based on the assumption of single-scattering, atmospheric propagation model of non-line-of-sight optical scattering communication system is studied.
  在单次散射假定下，研究了非视线光散射通信系统的大气传输模型。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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；