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In 1972 an extreme maximum ofDaphnia males was found.


Seasonal 1day extreme maximum temperatures mainly reflect decreasing trends, while seasonal 1day extreme minimum temperatures are increasing.


Our results indicate that large lipid pools and thin plaque caps are associated with both extreme maximum (stretch) and minimum (compression when negative) stress/strain levels.


The sensitivity of climate changes to variable solar forcing is presented as a comparison of extreme (maximum/minimum) activity conditions.


Trends in extreme temperatures have been investigated for the Belgrade temperature record (19752003) to assess how an increase in the mean summer temperatures is related to changes in the extreme maximum and minimum temperatures.

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 In terms of the data from the Rice ClimaticEcological Experiment conducted in the Yangtze Valley (1985—1986) , and the meteorological data during the same period, 3 mathematical models for the number of panicles per unit land area, the number of grains per panicle and, tne numoer of filledgrains percentage were built, respectively. The total hours of sunshine duration and the mean temperature during the tillering stage are the most importana meteorological factors for the effective panicle formation. The length... In terms of the data from the Rice ClimaticEcological Experiment conducted in the Yangtze Valley (1985—1986) , and the meteorological data during the same period, 3 mathematical models for the number of panicles per unit land area, the number of grains per panicle and, tne numoer of filledgrains percentage were built, respectively. The total hours of sunshine duration and the mean temperature during the tillering stage are the most importana meteorological factors for the effective panicle formation. The length in days from emergence to heading and the effective panicle number are important determinants of grain number per panicle. As to the number of filledgrians percentage, the total sunshine duration in hours and the mean maximum and minimum temperature during the period covering 15 days before and 25 days after heading are the determinants. A sink yield model was also developed, based On the following assumpation, i. e. , the 1000grain weight was considered as one of the stable varirtal characteristics and the empty grains percentage was the limiting factor to the sink yield. This means the formation of partial filled grains percentage relates to the shortage of source yield. A good agreement has been found between the simulated results and the experimental data.  根据长江流域优质、高产水稻新品种气候生态鉴定试验(1985～1986)的穗粒资料和同期气象资料,分别对单位面积上的有效穗数、每穗粒数和结实率的形成建立了相应的数学模型。决定有效穗数的重要气象因子是分蘖期的日照百分率和平均温度。决定每穗粒数的重要因子是出苗一抽穗的生育期长度与有效穗数。决定结实率的重要气象因子则是抽穗前15天至抽穗后25天的日照百分率和平均极端最高和最低温度。在建立“库”产量模型时,假定千粒重是稳定的品种特性,空粒率是限制“库”产量的因子而秕粒率的形成则与“源”产量不足有关。模拟值与试验值之间有较好的一致性。  Based on an investigation and analysis of the quick established tea gardens in Sichuan and their site conditions in combinations with the work of other researchers on tea ecological conditions, the authors assume that it is useful to the development of tea production to make a distinction of two concepts: the survival boundary and the economic growth boundary of tea plants. Hence, five main indexes of site conditions for the establishment of quick growing tea gardens in the province are proposed. The favourable... Based on an investigation and analysis of the quick established tea gardens in Sichuan and their site conditions in combinations with the work of other researchers on tea ecological conditions, the authors assume that it is useful to the development of tea production to make a distinction of two concepts: the survival boundary and the economic growth boundary of tea plants. Hence, five main indexes of site conditions for the establishment of quick growing tea gardens in the province are proposed. The favourable soil pH ranges from 4 to 6.5 with 4.5～5.5 being the optimum. The soil horizon should be above 50 cm in depth. A gentle slope of less than 15° or a flat patch is preferable. The optimum temperature arc: mean annual temperature—over 13℃, active accumulated temperature (>> 10℃)—3500℃ or more, the extreme low temperature—over—8℃ for var. bohea and 2.5℃ for var. macrophylla, and the extreme high temperature—41℃. Yearly rainfall should be above 1000 mm and the mean monthly rainfall during the active growth period (April to October) should be over 100 mm. In the period of March to November, the relative humidity in the air should be over 75%.  对四川等地速成茶园及其立地条件的调查分析表明,应把茶树的生存界限与经济生长界限相区别。四川省建立速成茶园最重要的立地条件指标是:土壤pH值4～6.5,以4.5～5.5最宜;全土层厚50cm以上;15°以下的缓坡或平地最佳;年平均气温13℃以上,>10℃积温3500℃以上,极端最低气温—8℃(中小叶种)或—2.5℃(大叶种),极端最高气温41℃;年平均降雨量1000mm以上,主要生长期4～10月平均月降雨量100mm以上,3～11日空气相对湿度月平均>75％。  Fine meteorological factors of 15 counties in the major bamboo producer areas of Guangxi Province were analyzed by principal component analysis and by means of the multivariate regression analysis of a multiple statistic method. The results indicated that the most important meteorological factors affecting bamboo, distribution and growth were the year's average temperature, ≥10℃, accumulated temperature, the highest annual temperature of many years, relative humidity, rainfall amount in the bambooshoot sprouting... Fine meteorological factors of 15 counties in the major bamboo producer areas of Guangxi Province were analyzed by principal component analysis and by means of the multivariate regression analysis of a multiple statistic method. The results indicated that the most important meteorological factors affecting bamboo, distribution and growth were the year's average temperature, ≥10℃, accumulated temperature, the highest annual temperature of many years, relative humidity, rainfall amount in the bambooshoot sprouting period, and yearly rainfall.  本文对广西毛竹两个主产区（桂林地区、柳州地区）15个县的9项气象因子,应用多元统计分析中的主成分分析法、逐步回归分析法进行分析,结果表明:影响广西毛竹分布、毛竹生长的气象因子主要是年均温、≥10℃积温、年极端最高温度、相对湿度、发笋期雨量、年雨量。   << 更多相关文摘 
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