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     WTO and Trend of China's Higher Vocational and Technical Education in the 21st Century
     WTO与21世纪我国高等职业技术教育走向
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     On China's Higher Professional Education
     我国发展高等职业教育的背景、现状和问题
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     Research on Jiangxi's Higher Professional Education Regionalization
     江西省高等职业教育区域化研究
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     Research on Reforms of Contemporary China's Higher Medical Education
     当代中国高等医学教育改革研究
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     The Historical Experience of China's Higher Pedagogical Education
     中国高等师范教育的历史经验
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     New Environments Chongqing s Higher Education Faces
     重庆高等教育面临的新环境
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     PRCBLEMS IN NINGBO'S HIGHER ADULT EDUCATION AND THE COUNTERMEASURES
     宁波成人高教的问题与对策
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     China's higher education heads for the 21st century
     走向21世纪的中国高等教育
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     Historical Alternative for Guangdong, Hong Kong and Macau′s Higher Education towards the 21st Century
     粤港澳高等教育面向21世纪的历史抉择
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     Institutional analysis about mobility within labor force and it's higher moving cost
     劳动力流动和迁移成本偏高的制度分析
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     D were higher.
     B组LVDS最小(P<0.05),D组LVDS最大(P<0.05);
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     and higher (?)
     与高(?)
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     higher speed;
     更高的速度;
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     DDE was higher.
     DDE残留水平较高.
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The measured interval velocity across the dome in 1984 ranges 1.8-2.2 km/s drastically low compared to the results (3.0-4.0 km/s) in 1954; in addition, the velocity is 0.3-0.5 km/s higher than that in the surrounding area.
      
Nevertheless, there is an increasing demand for novel light stabilizers which can meet even today's higher performance and quality requirements as well as cost pressures.
      
Saito's higher residue pairing: Ki(σi(Φ1),Φ2)=K0(Φ1,Φ2)), and demonstrate how it works in a simplest nontrivial example: correlator on a sphere with four marked points.
      
Competing hypotheses tested gender and identification with the target of disempowering acts as the underlying reason for women's higher sensitivity.
      
In addition, it is identified that at 40 Gbit/s higher positive values of the second- and third- order nonlinear coefficients of chirp must be avoided when operating at reverse bias voltages less than 1 V.
      
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This paper is a study of the 50 m/s high-speed cylindrical grinding of No. 45 steel and spheroidal graphite cast iron on a remodelled M120W universal cylindrical machine with a home-made high-speed grinding wheel. The influences of wheel speed, work speed, depth of cut and grinding feed on grinding productivity, grinding ratio, surface finish and power consumption are investigated, and the characteristics of high-speed grinding analysed.

本文介绍了在改装的M120W万能外圆磨床上用国产高速砂轮对45号钢件和球墨铸铁件进行50米/秒高速外圆纵磨的试验研究;考察了磨削用量对金属切除率、磨削比、加工表面光洁度以及功率消耗的影响;并对高速磨削过程的一些特征作了初步分析。

In a previous study we reported that peanut seeds from the fall crop of last year were superior tc those from the spring crop. It was recommended to use seeds from the fall crop for sowing to obtain better emergence of peanut seedlings. In order to find out the causes of deterioration of peanut seeds during the storage period, and to determine the optimal conditions for storing peanut seeds to maintain seed vigor, we have carried out the following storage experiments with peanut seeds of the variety "shi-xuan...

In a previous study we reported that peanut seeds from the fall crop of last year were superior tc those from the spring crop. It was recommended to use seeds from the fall crop for sowing to obtain better emergence of peanut seedlings. In order to find out the causes of deterioration of peanut seeds during the storage period, and to determine the optimal conditions for storing peanut seeds to maintain seed vigor, we have carried out the following storage experiments with peanut seeds of the variety "shi-xuan 64" ( 筛选64) from the spring crops in the years 1963-1967.1 .Seeds of various moisture contents were stored in sealed bottles and placed under room temperature. Those seeds with moisture contents below 6% during a storage period of about seven and a half months gave the highest percentage of seedling emergence in the next spring. They gave rise to vigorous seedlings, the percentages of germination and of seedling emergence being about 100% and 90-96% respectively. Free fatty acid contents of peanut seeds were low, and the percentage of infections by fungi and bacteria were also low. Seeds with moisture contents higher than 6% deteriorated rapidly; the higher the moisture content of seeds, the faster the rate of their deterioration.2. Seeds dried to moisture contents below 6% (5.58% in 1962, 5.49% in 1963)were stored in closed containers under various relative humidities (RH) controlled by calcium chloride solutions of different concentrations and placed under room temperature. It was found that the optimal RH's for storing peanut seeds were within the range of from 50% to 60%0 Seeds stored under such condititions had low moisture contents(below 6 %)and low free fatty acid contents. The percentages of seedling emergence from these seeds were high(88--93%)and the seedlings grew vigorously,with relatively low percentage of infection. Seeds stored under RH's higher than 60% tended to have higher moisture contents (>6%),higher free fatty acid contents and higher percentages of infection. Seedling emergence from such seeds were accordingly low, and the seedlings were less vigouous.3 . Various storage methods were compared and it was found that, among the methods tested, the best one was to store the pods in sealed earthen containers with some quick lime to adsorb moisture.Seeds stored under such conditions gave good emergence of seedlings (84.8-96.3%)in the next spring. Seeds stored in linen bags under room temperature would absorb moisture from the ambient air and deteriorated rapidly. Seedling emergence from such seeds were low (65.4-77.8%) in the next spring.4 . A five-year experiment was carried out from 1962 to 1967 to determine the longevity of peanut seeds. In the summer of 1962, sufficient ly dried pods (moisture content = 5.58%) were stored in hermetically sealed bottles at room temperature or at 4 ℃ ( in refrigerator ). Seeds stored under such conditions deteriorated only slowly, and aftera period of five years (from the summer of 1962 to the spring of 1967), they virtually retained their vitality. In the spring of 1967, the percentages of germination and of seedling emergence were 80.8% and 71.0% for seeds stored under room temperature, and were 96.0% and 91.0% for seeds stored at 4 ℃ respectively.From the above results a tentative conclusion is made that the critical moisture content for storing peanut seeds is 6 %.

前文报道,秋植花生种子比春植花生种子具有较强的生活力,用秋植花生种子播种可提高出苗率。为要了解春植花生种子在贮藏期间生活力衰退的原因,我们在1962—1967年间用“狮选64”品种春植花生种子进行贮藏生理和技术的研究,结果如下。 1.荚果不同晒干程度贮藏试验的结果表明,入贮前及贮藏期间的种子含水量在6%以下的种子,在室温下贮藏202天(至翌年春播前)仍能保持较高的生活力,种子含游离脂肪酸较少,发芽率高达100%,出苗率达90—96%,发病率较低。含水量在6%以上,种子迅速变质,游离脂肪酸含量升高而发芽率和出苗率下降;发病率亦增加;种子含水量愈高,则游离脂肪酸含量和发病率愈高而发芽率和出苗率愈低。 2.种子在不同相对湿度中贮藏的试验结果表明,充分干燥(含水量在6%以下)的种子在50—60%以下的相对湿度中贮藏194—206天(至翌年春播前),仍能保持其生活力,种子含水量在6%以下,游离脂肪酸含量和发病率较低而出苗率较高(88—93%),幼苗生势健壮。贮藏环境中的相对湿度在60%以上,则种子含水量亦增加至6%以上,游离脂肪酸含量和发病率均增高而出苗率则下降。 3.几种不同贮藏方法的比较试验结果表明,用缸藏加生石灰...

前文报道,秋植花生种子比春植花生种子具有较强的生活力,用秋植花生种子播种可提高出苗率。为要了解春植花生种子在贮藏期间生活力衰退的原因,我们在1962—1967年间用“狮选64”品种春植花生种子进行贮藏生理和技术的研究,结果如下。 1.荚果不同晒干程度贮藏试验的结果表明,入贮前及贮藏期间的种子含水量在6%以下的种子,在室温下贮藏202天(至翌年春播前)仍能保持较高的生活力,种子含游离脂肪酸较少,发芽率高达100%,出苗率达90—96%,发病率较低。含水量在6%以上,种子迅速变质,游离脂肪酸含量升高而发芽率和出苗率下降;发病率亦增加;种子含水量愈高,则游离脂肪酸含量和发病率愈高而发芽率和出苗率愈低。 2.种子在不同相对湿度中贮藏的试验结果表明,充分干燥(含水量在6%以下)的种子在50—60%以下的相对湿度中贮藏194—206天(至翌年春播前),仍能保持其生活力,种子含水量在6%以下,游离脂肪酸含量和发病率较低而出苗率较高(88—93%),幼苗生势健壮。贮藏环境中的相对湿度在60%以上,则种子含水量亦增加至6%以上,游离脂肪酸含量和发病率均增高而出苗率则下降。 3.几种不同贮藏方法的比较试验结果表明,用缸藏加生石灰并用泥封口的方法最好,用此法贮藏的种子在翌年春播时大田出苗率达84.8—96.3%。其次?

This paper describes the equipment used and the process conditions of the 120m/s high speed grinding. the experimental results of the main parameters such as F_n′P, V_w′, G and R_α under different grinding conditions (Z′) with different grinding wheels are presented.Compared under similar conditions with the 60m/s grinding, the 120m/s grinding has obvious advantages in incressing grinding productivity and work precision with less wheel abrasion and work roughness.The main parameters affecting...

This paper describes the equipment used and the process conditions of the 120m/s high speed grinding. the experimental results of the main parameters such as F_n′P, V_w′, G and R_α under different grinding conditions (Z′) with different grinding wheels are presented.Compared under similar conditions with the 60m/s grinding, the 120m/s grinding has obvious advantages in incressing grinding productivity and work precision with less wheel abrasion and work roughness.The main parameters affecting the 120m/s high speed grinding process and the relationship between them are analysed. Based on experimental results, the effects of high speed static pressure bearing, the rinsing of the grinding wheel with high pressure spray nozzle, cooling of the contact area, the wheel balance and dressing condition, ect. on the 120m/s high speed grinding process are discussed.

本文阐述进行120m/s高速磨削所使用的试验研究设备及其工艺条件.列出了使用不同砂轮在不同的磨削条件(z')下所得到的主要参数(F'_n, P, V'_w, G, R_a)的试验结果.在其它条件相同的情况下,和60m/s磨削的试验结果进行比较,120m/s高速磨削在提高磨削生产率、磨削精度、砂轮耐用度和工件表面光洁度等方面,都有显著的优越性.本文还对进行120m/s高速磨削时影响磨削过程的主要工艺参数及各参数问的关系进行了试验、分析和研究.试验结果表明,高速静压轴承、用高压喷咀冲洗砂轮和冷却磨削区域、砂轮平衡及修理条件等因素均对120m/s高速磨削过程产生影响.

 
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