四重的

The paper designs and makes a kind of active power filter experiment device with four use main circuit and without conformer.

作者设计、制作了一种不用变压器、采用四重化主电路实现的120kVA有源电力滤波器实验装置。

I wish I had the fourth to do all over again,Eaton said.

我希望有重来一次第四局的机会。

Two ends of the mixing axis that articulates with the mixing silo are loaded quadruple axle end seal device.

筒体与轴两端的相连处装有四重轴端密封装置。

The results showed that water content decreased first, then increased in the gastrula stage of embryonic development, reached the highest content at the second phrase larvae stage and then began to decrease from the third phase larva stage. The content of lipid in the dry weight increased with the embryonic development stages, but decreased at intramembranous nauplius stage, the second phase larva, and the infant stage of larvae development. The rate of lipid in wet weight decreased and the content of C20:4w6、20:5w3 and C22: 6w3 decreased.

结果显示，黑斑口虾蛄在胚胎和幼体的发育过程中，水的体积分数先降低，至原肠胚期开始升高，到第二相幼体期达到最高，之后又有所回落；脂类占组织干重的比率呈升高趋势，但分别在膜内无节幼体、第二相幼体和仔虾蛄期略有降低；脂类占组织湿重的比率呈降低趋势；花生四烯酸、EPA和DHA的体积分数都呈降低趋势。

A19 line poem of fixed form consisting of five tercets and a final quatrain on two rhymes , with the first and third of the first tercet repeated alternately as a refrain closing the succeeding stanzas and joined as the final couplet of the quatrain .

田园诗一种有固定格式的19诗；由五个三押韵的诗节和一个四诗节组成，其四诗节有二个韵，在第一个三押韵诗节中，第一和第三作为结束后继诗节的重复句间隔地重复出现，并作为四诗的结尾对句一起再现

A19 line poem of fixed form consisting of five tercets and a final quatrain on two rhymes , with the first and third lines of the first tercet repeated alternately as a refrain closing the succeeding stanzas and joined as the final couplet of the quatrain .

田园诗一种有固定格式的19诗；由个三押韵的诗节和一个四诗节组成，其四诗节有二个韵，在第一个三押韵诗节中，第一和第三作为结束后继诗节的重复句间隔地重复出现，并作为四诗的结尾对句一起再现来源：词友

Methods 55 patients were treated with pelvic cavity fourfold radiography and conventional check before iodic allergic experiment.

方法选择门诊患者55例，均行四重造影检查，检查前常规行碘过敏试验阴性52例，用复方泛影葡胺为造影剂；用非离子型碘造影剂碘海醇为造影剂，观察造影过程中患者过敏反应，分析碘过敏反应的机制。

The testing methods and targets were shown as below:Recorded milk weights from the 7th day postpartum to 15th day postpartum,and calculate the average day-milk yield;Milk samples were draw in 7th day and 14th day postpartum,and testing the milk fat,milk lactose,milk protein,milk Zn and the milk somatic cell counts;Blood samples were adopted at the 7th day postpartum,testing the levels of serum PRL; Blood samples adopted at the 1st day and the 12th day in oestrous cycle were used to test the levels of E_2 and P_4 in serum;In the experimental stage, registering the condition of parturition, the mean birth weight of calves,the first oestrus,the oestrus scycle postpartum and the conception rate of the first service after artificial insemination.

试验方法及所测指标如下：于产后第七天到第十四天记录日产奶量，最后计算每组平均日产奶量；每组随机抽取分娩后第七天、第十四天的奶样，测定乳糖、乳蛋白、乳脂、乳锌含量及乳体细胞数；于产后第七天，随机采取奶牛血样，测定血清中PRL含量；于发情周期的当天和第12天，随机采取血样，测定血清中雌二醇(Estradiol，E2)和孕酮(Progesterone，P)的浓度；记录奶牛的分娩情况、犊牛初生重、产后第一次发情日期、产后发情周期，并采用人工授精技术进行受精，记录第一情期受胎率，最后取平均值，作为衡量奶牛繁殖性能的指标。

Physiologicalmechanism of high yielding corn in the ravined valley was studied. Based on the results,the technical regime of ecologically adverse resistant and high yielding cultivation forthe corn in the ravined gully has been constructed. The major detailed techniques for theregime are ridging-ploughing in autumn and film-mulching during the thawing time inspring, adopting compact corn varieties with big ears and grains and adequately longgrowing stage, fertilizing adequately at seedtime and at jointing stage and irrigatingwith floodwater in the middle and late. The standardized techniques have also beenestablished.

&九五&期间，我们以充分发挥沟谷地的生态资源优势和育壮苗、攻大穗、增粒重的玉米高产规律为结合点，研究与明确了沟谷地高产玉米的生理机制，组建了以秋耕起垄顶凌覆膜保墒、选用紧凑型&三大&玉米品种、施足底肥重攻拔节肥、中后期洪淤补灌等四项技术为核心的沟谷地玉米生态抗逆高产栽培技术体系，制定了针对性强、技术准确、便于操作、简单易行的规范化技术。

A19 line poem of fixed form consisting of five tercets and a final quatrain on two rhymes , with the first and third of the first tercet repeated alternately as a refrain closing the succeeding stanzas and joined as the final couplet of the quatrain .

田园诗一种有固定格式的19诗；由五个三押韵的诗和一个四诗组成，其四诗有二个韵，在第一个三押韵诗中，第一和第三作为结束后继诗的重复句间隔地重复出现，并作为四诗的结尾对句一起再现

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。