四倍

They are complex polyploids, being partly tetraploid and partly hexaploid

它们是复杂的多倍体，其中一部分是四倍体，一部分是六倍体。

At the risk of provoking buried math anxiety, the "inverse square law" from high school physics states that if you double the distance from the source, for example, the field force drops four-fold, not just two-fold.

冒着激起潜在焦虑的风险，高中物理学的平方反比定律表明如果你离发射源有两倍距离，那么电磁场强度将下降四倍，不仅仅是两倍。

Double,triple,quadrable...

这样的动词表示"增长到两倍，三倍，四倍。。。"

A high performance liquid chromatographic method was established for determination of caffeic acid contents in tetraploidy taraxacum officinale and diplontic taraxacum dissectum.

本文采用四倍体药蒲公英和二倍体多裂蒲公英为材料，通过HPLC法测定并比较两种蒲公英中咖啡酸的含量，以大力推广产量高，抗逆性强，药用活性成分高的优质多倍体蒲公英新品种。

Fertilization results in triploid or tetraploid individuals.

这是由于染色体在第一次减数分裂的后期没有分离而导致了多倍的而不是单倍体的配子，受精后产生了三倍或四倍体。

Monosomic 3, monosomic 5, monosomic 10, trisomic 4 and trisomic 5 as experiment materials, their meiosis behavior of pollen mother cell, pollen characteristics, physiological and biochemical characteristics of anther, section observation of pollen development and the structure of embryo sac were studied, and the effects on the seed set and transmission rate were analyzed.

本文以大白菜同源四倍体小孢子培养产生的且已鉴定为3号单体、5号单体、10号单体、4号初级三体、5号初级三体的非整倍体株系及二倍体株系等为试材，对各材料的结籽率、雄配子传递率进行了统计，并对花粉母细胞减数分裂行为、花粉特性、花粉发育和胚囊结构以及花药生理生化特性等方面进行了观察研究，进而分析了其对大白菜单体n-1雄配子和三体n+1雄配子传递率的影响。

The article discusses China's economy, port logistics and the developing strategy of ports;explores the transnormal collaboration between Shanghai and Yangshan, and the rise of Jiangshu and Zhejiang Provinces's harbors;as well as analyses how to encourage healthy competition, how to establish reasonable logistic system and effective cooperation mechanisim.

本文对中国经济和港口物流，港口的发展战略，上海和洋山的超常规合作，江浙两省的港口崛起，鼓励健康竞争，建立合理物流体系以及有效合作机制做了探讨和分析。这里专家的回答会让您满意早知道白云兄出手，我就不翻译了，不过，这里说明一下：增长了近3倍，应该是翻了近四倍，而不是三倍。

However, the use of Aegliops tauschii in improvement of wheat yield trait has not been reported. In this study, T.durum-Ae.Squarrosa amphidiploids was crossed with common wheat PH85-16, then backcrossed with PH85-16. The variation characteristic of the main yield traits of BC1F1 and BC1F2 were analyzed. Then, QTLs affecting yield traits were detected by 130 SSR primer pairs of D genome in BC_1F_1 and BC_1F_2.The result showed chromosomes in D genome from Aegliops tauschii affected yield trait of wheat significantly.

本研究以二倍体小麦粗山羊草与四倍体硬粒小麦合成的双二倍体Am6为亲本，与普通小麦PH85-16 进行杂交，再用PH85-16 进行回交，对获得的回交后代进行了主要产量性状调查，利用位于小麦D 基组的SSR 分子标记进行了分子标记分析，对来自粗山羊草与产量性状相关的数量性状位点进行定位，探讨粗山羊草对小麦产量性状的影响。

There are three parts included. The first part is the prepositive-amplifier, it gets broadband high gain and flat frequency response. The second part is the U band quadrupler, which composed of two doublers using a PHEMT chip HMMC-5040, a Schottky diode of DMK-2790, a HMMC-5040 amplifier, and a fin-line transitional stage. Maximum output power higher than 60mW is obtained in V band. The third part is a 2nd harmonic gunn oscillator injection locked by the Fundamental Wave,which get about 2GHz locked bandwidth in W band.

电路主要由三部分组成，第一部分为采用HMMC-5618设计的前置放大器，实现了宽带高增益和平坦的频率响应；第二部分为设计的主体，由HMMC-5040设计的二倍频器、DMK-2790设计的二倍频器、HMMC-5040设计的放大器及鳍线过渡段组成的U波段四倍频器，在U波段实现了最高60mW以上的输出功率；第三部分为基波注入锁定谐波Gunn振荡器，在W波段实现了近2GHz锁定带宽。

"Wheats are called diploids when they have seven chromosomes, tetraploids when they have fourteen , and hexaploids when they have twenty-one."

其性细胞具有7条染色体的小麦称为二倍体；具有14条染色体的称为四倍体；具有21条的称为六倍体。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。