四体

It is found that hydrazone (2) with a nitrogroup has excellent ability for the detection of fluoride anion.

对四种分子内具有氢给体的电荷转移化合物与阴离子物种间的相互作用进行了研究。

This chapter is divided into four sections, First Section present the Qing Dynasty "Lao Zi" annotator's expectations "saints" is "Save by Tao" image of the ideal; Section II of the Qing Dynasty "Lao Zi" annotator's analysis of the concept of "Doing Nothing". The third quarter discusses the "Lao Zi" annotator in Qing Dynasty especially for the Thrust-Weight "Forgotten" in the political meaning.

本章共分为四节，第一节为「理想人格」，呈现清代《老子》注家对「圣人」的期许，他们认为圣人是大道的体用，是「以道救人」的理想形象；第二节为「无心顺物」，讨论清代《老子》注家对於「无为」概念的具体分析，他们以「循理而动」、「听其自取」、「各安其分」、「因时制宜」、「因情顺性」等观点，使「无为」的理念得以开展；第三节为「智识与相忘」，论述清代老子注家特别推重「忘」在政治意涵上的发挥，在忘境之中君民各尽其生，熙熙乐乐而浑然不觉。

The spiny anteater, an egg-laying mammal native to Australia and New Guinea, has a penis with four heads, but only two fit into the female at once.

针鼹是一种生活在澳大利亚和新几内亚的产卵哺乳动物，十分奇特的是，它的阴茎上有四个头，每次性行为时只能将其中两个头插入雌性体中

Objective To study the level and clinical significance of plasm antithrombin III,factor VIII,fibrinogen and D-dimer in pregnancy.

目的研究抗凝血酶-Ⅲ、凝血因子Ⅷ活性、纤维蛋白原、D-二聚体四项血凝指标在妊娠中的变化，探讨其在妊高征诊断和预防中的价值。

That indicated the availability of SRAP technique in studying genetic variability in Arachis. Estimates of genetic distance among the 28 accessions Arachis section ranged from 0.12 to 0.75 with average genetic distance of 0.42. A genetic distance clarified that A-genome A. duranensis was most closely associated with tetraploid germplasm, which could be A-genome donors. Dendrogram of cluster analysis classified 28 accessions Arachis section into two groups: one including tetraploid germplasm, and A.

聚类分析表明，28份花生材料间的遗传距离变幅为0.12~0.75，平均为0.42，A基因组物种Arachis duranensis与栽培种花生的亲缘关系最近，可能是栽培种花生的A基因组的供体。28份种质分为两大类，第一大类包含四倍体种质及A基因组的A。

As soybean Glycine max (Linn Merril has archean tetraploid chromosomes(2n=40) and belongs to Leguminosae, it is one of the most important resource of plant oil and protein for human beings, many scientist have attached more importance to the genetic soybean.

大豆Glycine max(LinnMerril属豆科蝶形花亚科大豆属的古四倍体(2n=40)植物，是世界上植物油和植物蛋白最重要的来源之一。因此，科学家高度重视大豆的品种改良。

Study on reproductive characters of autotetraploid rice.

同源四倍体水稻的生殖特性研究。

But no autotetraploid variety occurs in nature.

但自然界还没有一个同源四倍体种。

Objective To establish a tissue culture system of Pueraria thomsonii and to cultivate a new breed autotetraploid.

目的 建立粉葛的组织培养体系；培育粉葛同源四倍体新种质。

The low seed setting percentage is the most important reason that limits the application of the autotetraploid rice.

同源四倍体水稻结实率偏低是影响其在育种中直接应用的重要原因。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。