propagation

If a plant has spotted or crinkled leaves, do not use it for propagation.

如果植物的葉子有斑點(diǎn)或者萎縮，就不要用來(lái)繁殖。

柯林斯例句

Rose propagation has a long and rich history.

玫瑰繁殖有著悠久的歷史。

辭典例句

Such rootstocks or cultivars were reproduced true to type by vegetative propagation.

這些鉆木和品種,通過(guò)無(wú)性繁殖長(zhǎng)成和親本一樣的類型.

辭典例句

It is the reverse of the propagation step in addition polymerization.

這一過(guò)程是加聚反應(yīng)歷程中鏈增長(zhǎng)步序的逆過(guò)程.

辭典例句

Efficient methods of vegetative propagation and improved screening techniques are also required.

高效率的無(wú)性繁殖法和改良的鑒定技術(shù)也屬必需.

辭典例句

So far we have described the propagation of alternating magnetic fields.

至此我們討論了交變磁場(chǎng)的傳播.

辭典例句

Crack propagation usually begins slowly.

裂紋的增長(zhǎng)常常是開(kāi)始緩慢.

辭典例句

We first take up the subject of optic ray propagation through a variety of optical media.

首先研究光束通過(guò)各種光學(xué)介質(zhì)的傳播問(wèn)題.

辭典例句

Clonal propagation can also give some large gains in a relatively short time.

繁殖無(wú)性系也可以在較短期間內(nèi)提供較大的增益.

辭典例句

Diseases spread by insects are encouraged when climatic conditions propagation of the vector.

當(dāng)氣候條件適于媒介昆蟲(chóng)繁殖時(shí),由昆蟲(chóng)傳播的疾病即行蔓延.

辭典例句

The method is a direct simulation of the actual process of radiation propagation.

這種方法是輻射傳輸實(shí)際過(guò)程的直接模擬.

辭典例句

Also, the idea of progress and its enthusiastic propagation may have some effect.

還有, 進(jìn)步觀念及其熱烈宣傳也會(huì)產(chǎn)生某種效果.

辭典例句

A complete study of the propagation of shock waves in elastic solids is presently lacking.

關(guān)于彈性固體中沖擊波的傳播,目前還缺少全面的研究.

辭典例句

The simplest explanation of aberration is the analogy of light propagation to the fall of raindrops.

對(duì)光行差的最簡(jiǎn)單的解釋,是把光的傳播同雨點(diǎn)的下落作類比.

辭典例句

Propagation of virus in embryonating eggs was first used by Goodpasture and Woodruff in 1931.

1931年Goodpasture和Woodruff首次應(yīng)用雞胚培養(yǎng)病毒.

辭典例句