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yields     
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  产量
     ECOlOGICAl ANALYSES OF THE REACTION OF SOME FARM CROPS IN HESI CORRIDOR ON SAlT DAMAGE Ⅰ.Corr lation between crop yields and salt content
     河西地区几种农作物对盐害反应的生态学分析1.作物产量与盐分含量相关性
短句来源
     APPROACH TO THE METHOD ABOUT FORECASTING YIELDS IN HAILUN COUNTY
     海伦县作物产量预测方法的探讨
短句来源
     STUDY ON DIAMETER DISTRIBUTION AND MODELS PREDICTING YIELDS FOR NATURAL DAHURIAN LARCH STANDS
     兴安落叶松天然林直径分布及产量预测模型的研究
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     Application of Principal Factor Analysis in Meteorological Forecasting of Crop Yields
     主因子分析在粮食作物产量气象预报中的应用
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     THE EFFECTS OF 7 SUGARCANE CHARACTERSTO YIELDS
     甘蔗7个性状对产量的效应
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  产率
     Calculation of Product Yields for Gravity Concentration Equipment
     关于重选产品产率的计算
短句来源
     Determination of Wavelength-Averaged Quantum Yields for Photolysis of Pesticided
     农药光解平均波长量子产率的测定
短句来源
     Relationship between Meteorological Condition and Longan Yields Ⅰ.Analysis on the Selection of Target Productive Zone and Yields Ratio under Different Meteorological Condition
     气象条件与龙眼产量丰歉的关系Ⅰ.目标产区的选择及气象产率的分析
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     Study of Organic Hydroperoxides and H 2O 2Yields in Isoprene and O 3 Reactions.
     异戊二烯与O_3反应体系中有机氢过氧化物和H_2O_2的产率研究
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     Its yields were 0.168g/gcat·h based on all CuCr catalyst in the system and 0.336 g/gcat·h only based on the CuCr catalyst in BCSR.
     以系统中催化剂为基准,液体产物的产率则为0.166 g/gcat.h; BCSR中CuCr催化剂的液体产物的产率为0.336 g/gca.
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  收率
     STUDY ON RISE THE YIELDS OF SEBACIC ACID FROM CASTOR OIL
     提高蓖麻油制取癸二酸收率的研究
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     Investigation of the Correlation Model of Gas Hydrocarbon Yields for Catalytic Cracking Reaction
     催化裂化气体烃收率关联模型
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     The results showed that the favorable temperature of α-monobromination of 2,4-dichloroacetophenone was 5℃,and the favorable reaction medium was carbon tetrachloride. At these conditions,the yields of monobromide reached 93%.
     结果表明,第一步2,4-二氯苯乙酮的α单溴代反应较适宜的反应温度为5℃,较适宜的反应介质为四氯化碳,在此反应条件下,单溴代产物α-溴-2,4-二氯苯乙酮的收率为93%。
短句来源
     After optimization,the yields of AGO and VGO are 21.2% and 47.7% respectively from processing atmospheric residue under the condition of 430 ℃,1.0 h-1 space velocity,7 MPa and catalyst addition amount with 300 μg/g in once through operation,toluene insolubles yield level of 1.4%,a total conversion of AR which has a boiling point lower than 524 ℃ can reach above 80%.
     结果表明,在催化剂加入量300μg/g、反应温度430℃、空速1.0 h-1和反应压力7 MPa条件下单程通过反应处理大港常压渣油得到轻柴油和减压馏分油的收率分别为21.2%及47.7%。 甲苯不溶物收率低于1.4%,渣油(<524℃馏分)的转化率可达到80%以上。
短句来源
     The experimental results showed that the highest efficiency of separation and enrichment were obtained by solvent floatation. When solvent floatation, foam floatation and solvent extraction were applied, the enrichment factors obtained are 6.4, 5.9 and 1.4, and the yields obtained are 64.4%, 58.8% and 28.4%, respectively.
     结果表明溶剂浮选法分离富集的效果最好,泡沫浮选法次之,溶剂萃取法最差,富集倍数分别为6.4、5.9和1.4倍,收率分别为64.4%、58.8%和28.4%。
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  产额
     Yields of Charmed and Beautiful Mesons in e~+e~- Annihilation at s~1/2=10—178GeV
     在s~(1/2)=10—178GeV的e~+e~-湮没中粲介子与美介子的产额
短句来源
     Measurement of the backscattering yields for protons of H_2~+, H_3~+cluster ions in channeling condition
     H_2~+,H_3~+团簇离子在沟道条件下的背散射质子产额测量
短句来源
     The yields of DSB induced with 3Gy/min are 0.40DSBs/(100Mbp.Gy) while those induced with 30Gy/min are not obtained.
     3Gy/min辐照诱导DSB的产额为 0 .4 0DSBs/ (10 0Mbp .Gy) ,30Gy/min辐照诱导的DSB产额准确值无法得到 ;
短句来源
     The apparent rate constants and the apparent quantum yields of CS 2 dissociated into carbon monosulfide radical in the CS 2 and CS 2-O 2 systems were 8.06×10 -4s -1 and 2.72×10 -3s -1,0.62 and 2.05 respectively,and the mechanism for the reaction of CS with O 2 was discussed.
     在纯CS2 和CS2 O2 体系 ,光解产生的CS自由基中 ,CS2 的量子产额分别为Φ表观 =0 6 2和Φ′表观 =2 0 5、表观速率常数分别为k表观 =8 0 6× 1 0 - 4s- 1和k′表观 =2 72×1 0 - 3 s- 1,并讨论了CS自由基与O2 反应的机理 .
短句来源
     CHARGE DISTRIBUTION IN THE 14.7 MeV-NEUTRONINDUCED FISSION OF ~(232)Th:INDEPENDENT YIELDS OF ISOTOPES OF Rh,Ag,In AND Sb
     14.7MeV中子引起(232)~Th裂变的电荷分布:Rh、Ag、In和Sb同位素的独立产额
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      yields
    It is known [7] that dualizing a form of the Poisson summation formula yields a pair of linear transformations which map a function ? of one variable into a function and its cosine transform in a generalized sense.
          
    This formalism notably yields a correspondence principle which relates wavelets on the plane and on the sphere.
          
    Compounds 3-8 were also synthesized in good yields using microwave-mediated synthesis under solvent free conditions.
          
    This note shows that for a BVP of Poisson's equation withQm(u, v) as its source function, a direct evaluation of some integrals yields the same exact results as obtained by similarity analysis.
          
    An mra yields an orthonormal wavelet basis-an operator theoretic proof
          
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    The problem of large deflection of a clamped circular plate under uniform pressure is studied by the method of successive approximation in terms of the parameter representing the ratio of the center deflection to the thickness. The tedious numerical computations, involved in Way's power series solution are thus avoided. The yielding condition at the edge checks very well with the experimental results given by McPherson, Ramberg and Levy. The method may be easily extended to any other boundary conditions...

    The problem of large deflection of a clamped circular plate under uniform pressure is studied by the method of successive approximation in terms of the parameter representing the ratio of the center deflection to the thickness. The tedious numerical computations, involved in Way's power series solution are thus avoided. The yielding condition at the edge checks very well with the experimental results given by McPherson, Ramberg and Levy. The method may be easily extended to any other boundary conditions and loading details.

    本文所研究者,为一周缘夹紧之圆板,在匀布之侧向重压下所生之巨大挠曲。本文用圆板中点之挠曲距离与板厚之比率为参数,逐步求得本题之近似解答,藉此避免前人Way氏之幂级数法中繁重之数字计算。圆板周缘呈现委屈现象之条件,亦可求得,其结果与McPherson,Ramberg及Levy诸氏之实验,完全吻合。本法亦可适用于一圆板在其它周缘条件及其它荷重情况下之诸问题。

    In order to determine the practical value of the Bordeaux mixture as acontrol measure for the cotton leafhopper, a field experiment was designedand carried out in 1943 at Shatang, Liuchow, Kwangsi. Three known effective contact poisons, namely, a water suspension ofYam bean seed power (Gross Smith value 1%) (1:1000), a water suspension ofpyrethrum powder (1:600), and a water extract of tobacco (Nicotine content2.35%) (1:100) were applied at the same time with two types of Bordeauxmixture (4-6-50 and 2-4-50)...

    In order to determine the practical value of the Bordeaux mixture as acontrol measure for the cotton leafhopper, a field experiment was designedand carried out in 1943 at Shatang, Liuchow, Kwangsi. Three known effective contact poisons, namely, a water suspension ofYam bean seed power (Gross Smith value 1%) (1:1000), a water suspension ofpyrethrum powder (1:600), and a water extract of tobacco (Nicotine content2.35%) (1:100) were applied at the same time with two types of Bordeauxmixture (4-6-50 and 2-4-50) for four applications at a fifteen-day intervalduring the early growth season of cotton from June 15 to July 30. The popula-tion of leafhopper, the degree of infestation, the number of green bolls andthe yield of lint cotton were statistically analyzed and discussed. Population observations showed that the three contact poisons greatlyreduced the leafhopper population on the first day after application. Butthey soon lost their effectiveness three days later, so that the population startedto rebuild up and was practically with no significant difference from that ofhe untreated plots at the end of the fifteen-day interval. While the Bordeaux mixture showed a maximum reduction of population on the third day afterapplication, and maintained its effectiveness for a considerable time; the pop-ulation was constantly checked to such an extent that no serious damage wouldoccur during the spray interval. The degree of infestation as indicated by the symptom of cyrtosis onleaves was 40.83, 47.21, 55.85, 57.66, 62.48, and 60.39 per cent in average for4-6-50 Bordeaux mixture, 2-4-50 Bordeaux mixture, yam bean seed powdersuspension, pyrethrum powder suspension and tobacco water extract and theuntreated check plots respectively. Moreover, the percentage of heavily in-fested plants for the treated and untreated plots in the fore-mentioned orderwas 5.61, 8.24, 21.88, 23.68, 28.88 and 25.27 respectively.It was evident thatin the long run the Bordeaux mixture was the most effective insecticide inreducing the degree of infestation. The number of bolls per plant was 15.27, 13.24, 10.17, 9.53, 8.75 and6.75 in average, and the yield of lint cotton was 19.50, 17.84, 11.69, 10.11and 6.24 catties per mou (1 catty=0.5 kilogram, 1 mou=0.164 acre) for thetwo types of Bordeaux mixture and three kinds of contact poisons and theuntreated check plots respectively. The yield of cotton was generally much lower in 1943 than in 1942 forthe same experimental field. This was apparently due to the poorer soilfertility and heavier leafhopper infestation in 1943. But the ratio of the yieldbetween the Bordeaux mixture treated plots and the check plots was quitedifferent in the two years, i.e. 55.62 to 31 catties per mou in 1942, and 19.50to 6.24 catties per mou in 1943. This revealed a fact that the Bordeauxmixture treatment will he applied more effectively and profitably where thecotton field is not fertile and when the leafhopper outbreak is severe. 4-6-50 Bordeaux mixture and 2-4-50 Bordeaux mixture were in all casesinsignificantly different in their effectiveness. Theiefore a 2-4-50 Bordeauxmixture would be a more economical and practical measure for the cottonleafhopper control.

    (一)本试验应用三种防治棉浮(鹿土)子之有效接触剂,烟草、除虫菊、及豆薯种子,与两种配合式之波尔多液;4—6—50式及2—4—50式,同时在棉田内每半月施用一次,自六月半至七月底共施用四次。比较其消减虫口,减轻受害程度及增加产量诸功能,藉以证明波尔多液之特性。 (二)1000倍豆薯种子粉悬液、600倍除虫菊粉悬液、及100倍烟草水,三者不论在消减虫口,减轻受害程度,以及增加产量各方面,其功能均相若,无显著差异。 (三)4—6—50式波尔多液与2—4—50式波尔多液,对于治虫、减害及增产各功能,亦无显著差异。 (四)豆薯种子粉悬液、除虫菊粉悬液、及烟草水三种接触剂经施用后一天之治虫效力,均显较波尔多液为优,惟至第三天,差异便不显著,三天以后,波尔多液之功效反日见优越。此显示波尔多液之持久特性。 (五)棉浮(鹿土)子之虫口发生愈多,则波尔多液之功效愈著。因其效力持久,所抑制之虫口可还较接触剂为低。 (六)波尔多液减轻棉叶之受害程度,因其药效持久,附属牢固,保护力强,故亦较三种接触剂为优。 (七)施用波尔多液后,结铃数显然增加。其功效亦优于三种接触剂。 (八)施用波尔多液后,每亩皮棉产量亦显著增加。本年结果,施用4...

    (一)本试验应用三种防治棉浮(鹿土)子之有效接触剂,烟草、除虫菊、及豆薯种子,与两种配合式之波尔多液;4—6—50式及2—4—50式,同时在棉田内每半月施用一次,自六月半至七月底共施用四次。比较其消减虫口,减轻受害程度及增加产量诸功能,藉以证明波尔多液之特性。 (二)1000倍豆薯种子粉悬液、600倍除虫菊粉悬液、及100倍烟草水,三者不论在消减虫口,减轻受害程度,以及增加产量各方面,其功能均相若,无显著差异。 (三)4—6—50式波尔多液与2—4—50式波尔多液,对于治虫、减害及增产各功能,亦无显著差异。 (四)豆薯种子粉悬液、除虫菊粉悬液、及烟草水三种接触剂经施用后一天之治虫效力,均显较波尔多液为优,惟至第三天,差异便不显著,三天以后,波尔多液之功效反日见优越。此显示波尔多液之持久特性。 (五)棉浮(鹿土)子之虫口发生愈多,则波尔多液之功效愈著。因其效力持久,所抑制之虫口可还较接触剂为低。 (六)波尔多液减轻棉叶之受害程度,因其药效持久,附属牢固,保护力强,故亦较三种接触剂为优。 (七)施用波尔多液后,结铃数显然增加。其功效亦优于三种接触剂。 (八)施用波尔多液后,每亩皮棉产量亦显著增加。本年结果,施用4—6—50式波尔多液者,产量较对照区增多3.12倍,2—4—50式波尔多液区较对照区增产2.85倍

    The extent of coprecipitation of copper with ferric hydroxide in the am- monium chloride-ammonia process has been studied. Pentavalent arsenic and antimony may be present up to 10 mg, and phosphate, 50 mg. Aluminum exerts little effect. It is found that this method yields satisfactory results. The amount of copper coprecipitated in the ferric hydroxide precipitate is negligible in practical analysis.

    用氫氧化銨及氯化銨以分離銅與鐵,結果很好。氫氧化鐵中所留銅量,在實用分析上,已少至毋須考慮。用此法自多量鐵中分離少量銅份,可直接用此色法测定。五價砷與銻存在時,如不超過10毫克,或磷酸根不超過50毫克時,不影響銅與鐵的分離。鋁對分離更無影響。

     
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