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品质
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  quality
    Evaluation and Improvement of Quality of Chinese Double-low Rapeseed Meal
    中国双低油菜饼粕品质评价和品质改进研究
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    Study on the Molecular Markers of Egg-laying and Egg Quality Traits in Wenchang Chicken
    文昌鸡产蛋性能及蛋品质性状分子标记的研究
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    Studies on The Meat Quality of Tanghe County Pig——Ⅰ.Determination of the Meat Quality of Tanghe County Commercial Pig
    唐河县猪肉品质的研究 Ⅰ 唐河县商品猪肉质的测定
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    Analyses of the quality of water buffaloes' milk
    水牛乳的品质分析
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    Slaughter factors that affect pork quality in the USA
    影响美国猪肉品质的屠宰因素
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  “品质”译为未确定词的双语例句
    Study on Mutton Characteristics of Crossbred for Meat
    肉用杂种一代羊肉品质特性研究
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    QUALITATIVE ANALYSIS OF GEESE FATTY LIVER
    鹅肥肝品质的分析研究
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    A Study on Fattening Properties and Carcass Merits of White Pig in Gansu
    甘肃白猪肥育性能和胴体品质的研究
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    CONTINUAL EVALUATION OF RAM SEMEN FOR 12 MONTHS
    种公羊连续12个月的精液品质测定
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    A STUDY OF INFLUENCE OF ADDITIVES ON LUCERNE ENSILAGE
    添加剂对袋装苜蓿青贮品质影响的研究
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  quality
These bases are useful for building systems for evaluating image quality.
      
Such bases are useful for building systems for evaluation image quality.
      
Some theoretical issues and implementation details about the algorithm are discussed, including the solution of the pricing subproblem, the quality of LP relaxations, the branching scheme as well as the column management.
      
Seven topological descriptors are finally selected from 127 topological descriptors by GAPLS method to build a QSRR model with a high regression quality of squared correlation coefficient (R2) of 0.99998 and standard deviation (S) of 2.88.
      
These results might serve as a base for quality evaluation of Magnetitum (Cishi).
      
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一、本试验在筛选和比较国外六种牛精液常温保存液的基础上,改制成一种既不需要通CO_2处理,又适于20—25℃较高常温下保存牛精液的方法,保存液配方是:蒸溜水100毫升,二水柠檬酸钠2.3克,氨苯磺胺粉0.3克。先加热到100℃,冶却后再加入蜂蜜1.0克,过滤后再加热到50℃,冷却到室温后加青霉素10万单位,链霉素100毫克和新鲜卵黄10毫升。共pH为6.65,冰点下降度为-0.562℃,在20—25℃室温下保存牛精液,活力为0.5的保持天数为5~7天,总存活时间达9.7天。这种保存液简称为:卵—柠—蜜液。二、用本保存液1:20~1:30稀释牛精液,在20—25℃保存2.5—4.0天,授精母牛49头,情期受胎率为59.2%;同惯用的卵黄—柠檬酸钠液在5—10℃低温保存1—2天的精液授精母牛40头,情期受胎率为47.5%相此,差异显著(p<0.01)。三、本试验对于卵—柠—蜜液中蜂蜜种类不同的保存效果曾做了对比。初步结果表明:只要蜂蜜纯、品质好,尚未看出蜜源及其色调不同,对精液保存效果有显著影响。但对共授精效果的差异,尚待进一步观察。

A strain of hog Cholera virus has been adapted and maintained 430 passages in rabbits over past four more years. This virus strain readily multiplied in rabbits and it caused high and relatively durable hyperthermia. A series of experiments were performed on pigs in both laboratory and field trials and it was proved that the vilulence of the virus has been gradually and markedly attenuated to pigs after lapinized through rabbits. Before early 90 passages it caused mortality to both weaned and suckling piglets....

A strain of hog Cholera virus has been adapted and maintained 430 passages in rabbits over past four more years. This virus strain readily multiplied in rabbits and it caused high and relatively durable hyperthermia. A series of experiments were performed on pigs in both laboratory and field trials and it was proved that the vilulence of the virus has been gradually and markedly attenuated to pigs after lapinized through rabbits. Before early 90 passages it caused mortality to both weaned and suckling piglets. Thereafter, pigs from 62 herds were vaccinated With viruses from 91 to 165 rabbits passages only developed less reactions and mortality indicating further attenuation. But some of those suckling piglets of unthrifty condition died from enteritis complications following post-vaccination reactions, The Virus has been proved to be markedly attenuated after 156 more rabbits passages by the facts when pigs of different ages including 10 to 40 days suckling piglets vaccinated with the virus of the 214th and later passages without showed any subclinical reaction and there were no bad effects to their growth. During 1957, the virus after 300th passages was used as seed in preparing vaccines in many provinces, a total of 6752601 pigs of different ages and weights were vaccinated. The multiplication of the virus in pigs is occassionally accompanied by slight febrility. Generally no clinical reactions could be observed and slight loss of appetite was exhibited only by animals in poor condition of health. No post-vaccination losses occurred, although large doses of the virus were given. Further safety tests of the vaccine were performed and proved that the attenuation of the virus was quite reliable and safe. 15 days suckling piglets were perfectly healthy after inoculated with the virus which had been turned back to susceptible pigs for 6 serial passages and this indicated the stability of virulence of the lapinized vaccine for pigs. The vaccinated animals excreted no virus from urine or keep infective virus within the body for long intervel. Unvaccinated animals were kept with vaccinateb ones for 60 days. Every unvaccinated contact proved susceptible to challenge with virulent virus, performed 2 months after vacination. In our experiments the vaccination proved entirety safe for suckling pigs, which also developed relatively high degree of immunity. In several state farms a total of 191 sows in different stages of pregnancy were vaccinated. The animals exhibited no side reaction whatever and delivered normal fetouses. According to our results the attenuated rabbits virus has been considered to be an ideal live vaccine for hog cholera control, so that it has been used for mass vaccination within the whole country since 1957. More than 300 millions of vaccine doses have been inoculated in the field, and the results were reported to be quite safe and satisfactory. Since 1956, this Chinese or “K” strain of lapinized HC virus was introduced into USSR, Hungary, Bulgaria. DPRK, Romania, Vitnan and then other countries. The results of comparative experiments and successful mass vaccination in the field over many years in different countries have comfirmed that this C_strain of HC vaccine is very safe and has excellent immunogenicity. This live virus vaccine was considered an excellent tool in preparing the ground for the complete eradicaton of HC, such as new achieved in DPRK, Hungary, Bulgaria and some other European countries.

通过四年多的试验证明,猪瘟病毒由于连续通过兔体传代适应后,对猪的致病力,发生了明显的变化,通过兔体67代以前,对吃乳猪和断奶猪均不安全有死亡,用91代以后,165代以前各代兔化毒,在各农场试验,对断奶仔猪的死亡率降低,毒力减弱;但对某些少数体弱及饲养条件欠佳的吃乳猪群,仍会因反应诱发并发病死亡。到214代以后用于各龄仔猪包括生后10—40天的吃乳猪,已极安全,无可见反应,不影响发育。自1957年在全国广泛应用,平均反应率约1%,死亡率约0.1%(包括各种原因死亡在内,此时种毒为300代以后),说明兔化毒对猪的毒力已充分减弱。从其对猪的毒力演变过程来说,毒力减弱是随通过兔体传代数增加,而逐渐发生变化的。本试验还进一步证明了兔化毒毒力减弱后的稳定性,这株病毒虽连续回归通过易感仔猪6代,对生后15天的吃乳猪仍很安全。可以说,对猪的毒力并未增强,即使大量静脉注射仔猪也未发生可见反应。兔化毒免疫猪,不排泄病毒,猪体内也不长期保毒,与健康猪同群饲养,并不发生接触感染。免疫生后10—40天的吃乳猪,不影响其发育,初步观察对怀孕22天—3.5月的母猪,不发生流产,正常产仔。各省区在应用期中,也曾仔细观察兔化毒对吃乳猪和仔猪的...

通过四年多的试验证明,猪瘟病毒由于连续通过兔体传代适应后,对猪的致病力,发生了明显的变化,通过兔体67代以前,对吃乳猪和断奶猪均不安全有死亡,用91代以后,165代以前各代兔化毒,在各农场试验,对断奶仔猪的死亡率降低,毒力减弱;但对某些少数体弱及饲养条件欠佳的吃乳猪群,仍会因反应诱发并发病死亡。到214代以后用于各龄仔猪包括生后10—40天的吃乳猪,已极安全,无可见反应,不影响发育。自1957年在全国广泛应用,平均反应率约1%,死亡率约0.1%(包括各种原因死亡在内,此时种毒为300代以后),说明兔化毒对猪的毒力已充分减弱。从其对猪的毒力演变过程来说,毒力减弱是随通过兔体传代数增加,而逐渐发生变化的。本试验还进一步证明了兔化毒毒力减弱后的稳定性,这株病毒虽连续回归通过易感仔猪6代,对生后15天的吃乳猪仍很安全。可以说,对猪的毒力并未增强,即使大量静脉注射仔猪也未发生可见反应。兔化毒免疫猪,不排泄病毒,猪体内也不长期保毒,与健康猪同群饲养,并不发生接触感染。免疫生后10—40天的吃乳猪,不影响其发育,初步观察对怀孕22天—3.5月的母猪,不发生流产,正常产仔。各省区在应用期中,也曾仔细观察兔化毒对吃乳猪和仔猪的安全性,未报告有什么不良反应产生。河南、陕西曾用以接种生后3天的吃乳猪,也没有什么反应,发育正常。不论根据实验室和在全国广泛实践应用的结果,均证明猪瘟兔化毒对猪的毒力已显著减弱,而对猪的免疫力仍很坚强,与国际文献所报导的其他各国应用的猪瘟弱毒株相比,品质是优良的。可以说是一株理想的猪瘟活毒疫苗弱毒株。从1956年开始,先后供给苏联、越南、匈牙利、罗马尼亚、保加利亚及朝鲜人民民主共和国等国应用,已分別取得控制或消灭猪瘟的良好效果。

Summary After filtration and evalution under microscope, the collected ejaculate of ejaculate jackass was diluted 3∶1 by the glucose-yolk extender (1). then centrifuged at 1500 r.p.m. for 10 min., under sterlized condition and at 30℃ regulated by thermostat. The superiluid was discarded and the concentrated portion in the bottom was diluted 1∶6 at room temperature using the following listed freezing extender (2). Alloted 3 ml into each of the 7×3 cm plastic bags and set them on a rack in order to get flatted...

Summary After filtration and evalution under microscope, the collected ejaculate of ejaculate jackass was diluted 3∶1 by the glucose-yolk extender (1). then centrifuged at 1500 r.p.m. for 10 min., under sterlized condition and at 30℃ regulated by thermostat. The superiluid was discarded and the concentrated portion in the bottom was diluted 1∶6 at room temperature using the following listed freezing extender (2). Alloted 3 ml into each of the 7×3 cm plastic bags and set them on a rack in order to get flatted thin bags after an equilibrium period of 1.5-3 hrs. at 0-5℃ and then the freezing technique was completed after imbedding in dry ice for 10min. Composition of extender (1) Dehydroglucose 3.25 g. Sucrose 5.00 g. Penicillin 100.000 units Streptomycin 100.000 units Distilled water 100 ml. Composition of extender (2) Take the extender (1) by 46.5 ml Egg yolk 3.5 ml Glycerin 5.0 ml Fresh whole milk 45.0ml The observed average effective viability of the spermatozoa freezed by 3 different techniques, namely use plastic bag, glass ampoule and granule method was 0.4 (0.3-0.5), 0.32 (0.25-0.40) and 0.37 (0.30-0.45) respectively. Field trials were conducted for four years and more than 100 mares had been inseminated with membrane frozen semen. The average conception rate after first oestrus was 52.3% (48.6-55%), which was closed to the fertility level of the fresh semen.

精液采出后,经过滤立即镜检评定精液品质。镜检完毕,将原精液用葡萄糖——卵黄液作3∶1稀释,至30℃灭菌自控恒温箱内以1500转/分的速度离心10分钟。除去上清液,将浓缩精子部分,用合甘油的冷冻稀释浓至室溫下作1∶6一次稀释,随即分装入塑料薄膜袋内(7×3),每袋3毫升,放入特制网夹中定型成薄片,置于0°—5℃下平衡1.5—3小时后,在特制的冷冻箱内的干冰中,冷冻10钟即完成。薄膜法与安瓿、颗粒法冷冻效果比较,解冻后平均有效精子活力,分别为∶薄膜法0.4(0.3—0.5),颗粒法0.37(0.3—0.45),安瓿法0.32(0.25—0.4)。经过四年生产试验,输精母马头数在一百匹以上。一个情期平均受胎率为52.3%(46.6—55%),达到了鲜精受胎率水平(P>0.05)。

 
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