propagation 词态变化
复数: propagations;动词: propagate;
propagation 英文词源
- propagation (n.)
- mid-15c., from Old French propagacion "offshoot, offspring" (13c.) and directly from Latin propagationem (nominative propagatio) "a propagation, extension, enlargement," noun of action from past participle stem of propagare "set forward, extend, spread, increase; multiply plants by layers, breed," from propago (genitive propaginis) "that which propagates, offspring," from pro- "forth" (see pro-) + *pag-, root of pangere "to fasten" (see pact).
propagation 英文释义
- 1. the spreading of something (a belief or practice) into new regions
- 2. the act of producing offspring or multiplying by such production
- 3. the movement of a wave through a medium
propagation 双语例句
- 1. In this paper, a Boiler Operation Optimizing model is built by using BP ( Back - Propagation ) Neural Network.
- 本文引入人工神经网络之BP网络 ( Back-Propagation ),建立了锅炉的运行优化模型.
来自互联网
- 2. 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。
来自柯林斯例句
- 3. Rose propagation has a long and rich history.
- 玫瑰繁殖有着悠久的历史。
来自辞典例句
- 4. Such rootstocks or cultivars were reproduced true to type by vegetative propagation.
- 这些钻木和品种,通过无性繁殖长成和亲本一样的类型.
来自辞典例句
- 5. Time deviation due to propagation delay can be tolerated.
- 允许存在传输延迟所引起的时间漂移.
来自辞典例句
propagation 实用场景例句
- 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。
柯林斯例句
- Rose propagation has a long and rich history.
- 玫瑰繁殖有着悠久的历史。
辞典例句
- Such rootstocks or cultivars were reproduced true to type by vegetative propagation.
- 这些钻木和品种,通过无性繁殖长成和亲本一样的类型.
辞典例句
- It is the reverse of the propagation step in addition polymerization.
- 这一过程是加聚反应历程中链增长步序的逆过程.
辞典例句
- Efficient methods of vegetative propagation and improved screening techniques are also required.
- 高效率的无性繁殖法和改良的鉴定技术也属必需.
辞典例句
- 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.
辞典例句
- Crack propagation usually begins slowly.
- 裂纹的增长常常是开始缓慢.
辞典例句
- We first take up the subject of optic ray propagation through a variety of optical media.
- 首先研究光束通过各种光学介质的传播问题.
辞典例句
- Clonal propagation can also give some large gains in a relatively short time.
- 繁殖无性系也可以在较短期间内提供较大的增益.
辞典例句
- Diseases spread by insects are encouraged when climatic conditions propagation of the vector.
- 当气候条件适于媒介昆虫繁殖时,由昆虫传播的疾病即行蔓延.
辞典例句
- The method is a direct simulation of the actual process of radiation propagation.
- 这种方法是辐射传输实际过程的直接模拟.
辞典例句
- Also, the idea of progress and its enthusiastic propagation may have some effect.
- 还有, 进步观念及其热烈宣传也会产生某种效果.
辞典例句
- A complete study of the propagation of shock waves in elastic solids is presently lacking.
- 关于弹性固体中冲击波的传播,目前还缺少全面的研究.
辞典例句
- The simplest explanation of aberration is the analogy of light propagation to the fall of raindrops.
- 对光行差的最简单的解释,是把光的传播同雨点的下落作类比.
辞典例句
- Propagation of virus in embryonating eggs was first used by Goodpasture and Woodruff in 1931.
- 1931年Goodpasture和Woodruff首次应用鸡胚培养病毒.
辞典例句
