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   coefficient of economic 的翻译结果: 查询用时:0.173秒
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coefficient of economic
相关语句
  经济系数
     High-yielding plots nsually have a higher coefficient of economic yield(Ke),which is closelyrelated to the cultural conditions.
     改善栽培条件,有利提高经济系数
短句来源
     Its coefficient of economic yield averages only 0.35. It is reasonable that breeding efforts to improve morphological characteristics of the plant and enhance the storage capacity of the ear should be the bases of future breeding programs for raising photosynthetic efficiency.
     当前应以改善植株的形态特征和扩充结实器官的容纳能力,提高经济系数作为进一步直接提高光合效率的育种基础。
短句来源
     The effects of five main cultivating factors on coefficient of economic and harvest index is not significant. There is very significant difference among dry physical weight of population and no difference among coefficient of economic and harvest index in different yield ranges.
     五因素对经济系数、收获指数不产生显著影响 ,不同产量水平下 ,群体干物重间存在极显著差异 ,而经济系数间收获指数间无显著差异性。
短句来源
     There is an extremely significant positive correlation between population yield and dry physical weight of population, coefficient of economic and harvest index. There is no significant correlation among population yield and coefficient of economic, harvest index, dry physical weight of population and coefficient of economic, harvest index.
     群体产量与群体干物重间呈极显著正相关 ,群体干物重与经济系数、收获指数间和群体产量与经济系数、收获指数间均无显著相关性 ,经济系数与收获指数间呈极显著正相关。
短句来源
  “coefficient of economic”译为未确定词的双语例句
     Prediction of Elastic Coefficient of Economic Efficiency of China's Information Resources Industry
     我国信息资源工业经济效益弹性系数测算
短句来源
     the coefficient of economic risk of illness.
     计算特定人群疾病经济风险度RR,进行疾病经济风险研究; 计算抗疾病经济风险系数K的分布,测量基本医疗保险对疾病家庭的经济风险分担能力;
短句来源
     The highest grain yield per plot (638g), relatively high 1000—grain weight (34.5g), grain weight per ear (1.14g) and the highest coefficient of economic yield(0.50) were obtained from the July 14th seeding. Xiamai No. 1 produced a taller plant, with longer ears, and more grains.
     在适宜播期(7月14日)获得最高的小区产量(637.7克),较高的千粒重(34.5克)、穗粒重(1.14克)和本试验中最高的经济产量系数(0.50)。
短句来源
     The aim to predict the elastic coefficient of economic efficiency for information resources industry in our country is to look for a new quantitative and practical way in which the effect of development and utilization of information resources on economic development can be studied, so that the economists can have an accurate psychological prediction of the input, development and utilization of information resources in production, business management, consumption, administration and so on, and the development and utilization information resources input can be put into good circulation.
     测算我国信息资源工业经济效益弹性系数 ,旨在为信息资源开发利用对经济发展影响研究寻找一条既可量化、又可操作的新途径 ,使经济主体在生产、经营、消费、管理等经济行为过程中。 对信息资源开发利用投入有一个较为准确的心理预期 ,进而使我国信息资源开发利用投入产出进入良性循环。
短句来源
     The elasticity coefficient of regional scientific,technological and educational level to information resources is 0.854; and the elasticity coefficient of economic development level to the information resources is 0.237.The author argues that the government should play a leading role in the distribution of information resource and meanwhile to adjust the information utilized price,narrow the regional information resources gap and carry out the research on how to replace the visible resources with the information resources.
     应大力发展信息产业,发挥政府部门在信息资源配置过程中的主导作用,优化信息资源配置,同时调整信息消费价格,缩小地区信息资源差距,大力开展信息资源替代有形资源的研究。
短句来源
  相似匹配句对
     economic coefficient;
     经济系数;
短句来源
     the coefficient of economic risk of illness.
     计算特定人群疾病经济风险度RR,进行疾病经济风险研究; 计算抗疾病经济风险系数K的分布,测量基本医疗保险对疾病家庭的经济风险分担能力;
短句来源
     The inversive and economic adjustment to consumption coefficient matrix
     消耗系数矩阵的逆向经济调整
短句来源
     Exergy-economic coefficient in election of refrigertion system
     经济系数在制冷方案选择中的应用
短句来源
     Exergy-economic coefficient in selection of refrigeration system
     经济系数在制冷方案选择中的应用
短句来源
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  coefficient of economic
Where y is the coefficient of economic efficiency and x1, x2 are vectors of production time.
      
Total coefficient of economic efficiency was estimated by integration of calculated mathematical function.
      
An econometric approach for prediction of optimal egg production period by coefficient of economic efficiency and multiphasic analysis mated.
      


Of 9 experiments made on the planting rate of corn in 1958 to 1962,5 were subjected tothe combination with different arrangements.The relation of planting rate to biological yield,grain yield,as well as the other 40 quantitative characters and field meteorological factorshave been studied.The effect of agrotechnic levels and the amounts of manuring on theoptimum rate of planting has been investigated.The main results obtained are summarized asfollows:1.The relationship between planting rate and yields.(?)It...

Of 9 experiments made on the planting rate of corn in 1958 to 1962,5 were subjected tothe combination with different arrangements.The relation of planting rate to biological yield,grain yield,as well as the other 40 quantitative characters and field meteorological factorshave been studied.The effect of agrotechnic levels and the amounts of manuring on theoptimum rate of planting has been investigated.The main results obtained are summarized asfollows:1.The relationship between planting rate and yields.(?)It has been found that therelation of planting rate to biological yield may be expressed by a modified hyperbola.Thegeneral formula is W=x/(a+bx).The asymtete is(?)=1/b.The relation of planting rate tograin yield may be expressed by parabola-like curve.The general formula is w=ae~(bx+lnx).,while the planting rate with the highest yield is x=(-1)/b.Furthermore,the yield-rate equa-tion composed of biological yield and the coefficient of economic yield has been analysed,andthe equation is listed as formula (7) in the article.2.The relation of planting rate to certain quantitative characters.(?)It has beenfound that from among 40 quantitative characters,32 may respectively be expressed by thefollowing formulae:(1) Y=x/(a+bx),(2)Y=1/(a+bx),(3)Y=ae~(bx),and (4) Y=a+bx.The relations of planting rate to the three quantitative characters (i.e.stages of growth anddevelopment,changes of leaf area and accumulation of dry matter) are unknown,but theirresults may clearly be described;the relations of planting rate to another five quantitativecharacters (i.e.length of plants and ears,percentage of grain production,volume weight andnumber of leaves per plant) have not yet been reached the conclusion.The changes of leafarea have fully been studied on five experiments,and based on the statistics of rate of growth,rate of fluctuation,and rate of declination,the plan for proper development of green leaf areato secure high yield has primarily been issued.3.The relationship between agrotechnic levels and the optimum rate of planting.(?)According to experiments,it has been indicated that the planting rate of corn may be increasedproperly so long as the levels of agrotechnics are raised.The equations for expressing therelationship between planting rate and the grain yield under different agrotechnic levels wereobtained and briefly discussed.4.The relationship between the amounts of manuring and the optimum rate of planting.(?)This relation is similar to that of 3,namely,the rate of planting may be increased aslong as the application of manure is increased.But the efficiency of manuring is diminishedaccordingly due to the increase of planting rate.5.The relationship between the planting rate and the field meteorological factors.(?)The record of the temperature and relative humidity for 24 hours showed that the changebetween day and night is lessened according to the increasing of planting rate.The light in-tensity above the ground surface of the population is reduced as a result of increased plantingrate,but the speed of such reduction is gradually lowered in proportion to the increase ofplanting rate.

本文根据9个玉米密度试验的资料,论述了:(1)不同密度下玉米生物产量及籽粒产量的变化规律及其回归方程;(2)不同密度下玉米40个性状项目的变化规律及其回归方程;(3)生产水平及肥料数量对玉米密度的影响;(4)不同密度下玉米群体的小气候特点。供试密度从每亩1,000—8,000株。

Studies on the production and distribution of dry matter were made during the period from1977 to 1979 in high-yielding populations of single cropped mid-seasoned hybrid rice cultivars.Highyield of 725.4,716.25 and 709.5 kg/mu was obtained respectively by three cultivars,namely,Nan-yuNo.3,Gan-hua No.2,and V20A×Giu630.It was found that the production of dry matter is closelyrelated to the grain yield of these hybrids;the increase of grain yield depends upon the increase ofthe total amount of dry matter produced.Heterosis...

Studies on the production and distribution of dry matter were made during the period from1977 to 1979 in high-yielding populations of single cropped mid-seasoned hybrid rice cultivars.Highyield of 725.4,716.25 and 709.5 kg/mu was obtained respectively by three cultivars,namely,Nan-yuNo.3,Gan-hua No.2,and V20A×Giu630.It was found that the production of dry matter is closelyrelated to the grain yield of these hybrids;the increase of grain yield depends upon the increase ofthe total amount of dry matter produced.Heterosis in the production and storage of dry matter wasmanifested in the earlier stages.This heterotic effect is closely related to the total photosynthetic area.Heterosis in net assimilation rate was also observed in the earlier stages,but it disappeared later.Theproduction of dry matter is also related to the canopy structure and the planting season;early trans-planting of seedlings usually brings about high yield.High-yielding plots nsually have a higher coefficient of economic yield(Ke),which is closelyrelated to the cultural conditions.The increase of the dry weight of tillers and that per unit area ofleaves is favourable to the formation of an ideal canopy.In order to increasa the rate of seed-setting.It is necessary to increase the photosynthetic productsalloted to the spikelets at the heading stage.It is important in hlgh-yield culture of hybrid rice to utilize the heterosis of vegetative growthfor better seed-setting and filling of grains,to improve the efficieney of the light-receiving capacityof the popvlations and to maintain better daily increase of dry weight during the later atages.The rate of growth between the different organs and the different growth staoes should also becoordinated.The maximum number of tillers should be kept below 350 thousand per mu,whereas themaximum leaf area index should be manipulated to about 7.5-8.

1977~1979年,作者在杂交稻高产栽培过程中,研究了高产群体的干物质生产与分配。高产田谷粒产量与干物质产量密切相关。水稻生长前期总光合势的迅速增加,导致干物质生产与积累表现优势,净同化率的优势前期明显,后期消失。适期早栽、冠层结构良好,干物质产量较高。改善栽培条件,有利提高经济系数。增加单蘖的干物质和单位叶面积的干重,有利于建成高产群体。杂交稻高产栽培关键在于合理利用营养优势,提高光能利用率、协调器官之间和生育期间的生长。最高茎蘖数不超过35万/亩,最高叶面积指数保持在7.5~8左右为好。

Photosynthetic characteristics of the leaf of Sotaria italica (L) Beauv. were studied in three respects: leaf anatomy, cell ultrastructure, and photosynthetic rate of flag leaves. This was done in order to determine the pathway of photosynthetic carbon assimilation of S. italica Some positive results were obtained: (ⅰ) Leaves in the three varieties of S. italica under study possess Kranz type leaf anatomy, characterized by alayer of bundle sheath cells surrounding the vascular tissue. This layer contains a lot...

Photosynthetic characteristics of the leaf of Sotaria italica (L) Beauv. were studied in three respects: leaf anatomy, cell ultrastructure, and photosynthetic rate of flag leaves. This was done in order to determine the pathway of photosynthetic carbon assimilation of S. italica Some positive results were obtained: (ⅰ) Leaves in the three varieties of S. italica under study possess Kranz type leaf anatomy, characterized by alayer of bundle sheath cells surrounding the vascular tissue. This layer contains a lot of larger chloroplasts which are centrifugally located inside the cells. Mesophyll cells surround the bundle sheath radiately. (ⅱ) Ultramicroscopy proved that structural dimorphism of chloroplasts is extreme in S. italica. The mesophyll chloro plasts of which are granal and prossess peripheral reticulum. The bundle sheath chloro plasts, however, lack grana. (ⅲ)The photosynthetic rate of the intact flag leaves averaged 35 mg CO_2~-.dm~(-2)hr~(-1), which is higher than the general level of C_3 species. All of these three characteristics indicate the typical features of C_4 photosynthetic pathway. This thesis also reviews the literature conrcerning the photosynthetic character istits of S. italica. It is concluded from the following seven aspects that this species possesses the C_4 syndrome: (1) C_4-dicarboxylic acids as the dominant initial products of photosynthesis. (2) Kranz type leaf anatomy and narrower intervienal distance. (3) Structural dimorphism of chloroplasts and peripheral reticulum in mesophyll chloroplasts. (4) Higher ~(13)C/~(12)C ratio. (5) Activity levels and compartmentalization of PEPC and RuBPC, and the patterns of the promotion and inhibition of CO_2 fixation in bundle sheath chloroplasts by the metabolic intermediates of photosynthesis. (6) Enzymic activity and physiological features concerting photorespiration tallying with C_4 features. (7) Higher photosynthetic rate. The photorespiration rate and physiological features tally basically with C_4 featu res, but are slightly higher than the levels reported for other typical C_4 species such as sorghum and corn. A possible explanation is presented. The phenomenon stated above is perhaps associated with the fact that S. italica is a C_4 species originated in the temperate zone. S. italiia was more often evolutionarily subjected to water and nitrogten stresses and a biotic stress, However, the evolutionary stresses that reduce pho torespiration in the temperate zone are relatively lower than those in thetropical zone, because the temperature and light intensity are not very high in the former case. S. italica is a kind of crop which has not been strongly affected by modern techniques of plant breeding. Its coefficient of economic yield averages only 0.35. It is reasonable that breeding efforts to improve morphological characteristics of the plant and enhance the storage capacity of the ear should be the bases of future breeding programs for raising photosynthetic efficiency.

为了研究谷子[Setaria italica(L·)Beauv·]的光合作用碳素同化途径,本文对该植物的叶片解剖特征和细胞亚显微结构做了观察。试验结果表明: (1) 谷子具有典型的Kranz型叶解剖特征。 (2) 谷子叶片中存在着二形叶绿体。MC叶绿体含有清晰的基粒和周质网,而VBS叶绿体没有基粒,但是有大量的淀粉粒。这两方面都显示了C_4植物的特征。本文对有关的文献做了综述,从七个方面确定谷子是C_4植物:①光合初产物以四碳二羧酸为主;②Kranz型叶解剖特征和窄的叶脉间距;③二形叶绿体和周质网;④高的~(13)C/~(12)C比值;⑤PEPC和RuBPC的活性水平,分室隔离以及光合代谢中间产物对VBS叶绿体固定COz作用的促进和抑制;⑥低光呼吸;⑦较高的光合强度。谷子光呼吸和与光呼吸有关的生理指标基本符合C_4特征,但稍高于典型C_4植物的水平,这可能和谷子是温带起源的C_4种有关。它在进化过程中所迂到的温度和光照条件对降低光呼吸作用的进化压力相对比热带环境的要小一些。谷子受现代育种技术的影响还比较少。当前应以改善植株的形态特征和扩充结实器官的容纳能力,提高经济系数作为进一步直接提高光合效率的育种基础。

 
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