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

• 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。
• 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 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。
• 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。
• 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；
• 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。
• 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。
• 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。
• 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。
• 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。