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Methods of measuring the input components, their prices and output elements are given. We put forward some new methods in measuring components, including composite depreciation rate, equality working hours, and proxy of input resources. Using the mature methods of efficiency measurement and decomposition available, we make a detailed investigation into 4 listing companies of oil industry with a span of 12 periods. Basic conclusions we draw include: labor inputs affects oil field output mostly in China; China oil fields operates in a low technical efficiency level average of 0.61; Increasing difficulties with expanding output has the greatest influence on cost; Cost efficiency of China oil fields averages at 1.47; Total factor productivity of China oil fields averages at 10%, accounting for 79% of the total output growth rate of 12.6%; Frontier technology progress contributes the most to TFP of China oil fields with 17 percentage points.
本文沿用了已有文献中关于效率计量与分解的成熟方法,对我国三家油田上市公司与一家上市石油公司12个时期的技术效率与成本效率进行了详细的计量、分解与分析,得到的基本结论有:劳动力投入是影响我国油田上市公司产出的最重要的影响因素;油田的平均技术效率仅为0.61;产出项是影响成本的显著因素,这说明随着产出增加而出现的开采难度增加是导致开采成本增加的重要因素;油田的平均成本效率为1.47;全要素生产率的增长平均在10%左右,占到了产出平均增长率12.6%的79%,表明我国油田的生产率的提高主要是依靠全要素生产率的提高而实现的,只有21%左右的产出增长是依靠要素投入而实现的;前沿技术进步是油田全要素生产率增长的主要源泉,在2001~2004年期间,前沿技术进步对油田生产率的贡献高达17个百分点。
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To understand metabolic adaptations,the basal metabolic rate of four small birds in China were investigated.Metabolic rate,body temperature and thermal conductance were determined in yellow-browed bunting Emberiza chrysophrys at a temperature range of 5-35° C,chestnut-flanked white-eye Zosterops erythropleura and hwamei Garrulax canorus at 10-30° C,and red-billed leiothrix Leiothrix lutea at 10-35° C.Oxygen consumption was measured by using a closed circuit respirometer.
采用封闭式流体压力呼吸计,分别在5-35° C、10-30° C和10-35° C的环境温度范围内测定了黄眉NFDA2、红胁绣眼鸟、画眉和红嘴相思鸟的耗氧量、热传导、体温等指标,探讨了其代谢产热特征。
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Encourag'd with this Observation, I resolv'd the next Morning to set out with the first of the Tide; and reposing my self for the Night in the Canoe, under the great Watch-coat, I mention'd, I launched out: I made first a little out to Sea full North, till I began to feel the Benefit of the Current, which set Eastward, and which carry'd me at a great rate, and yet did not so hurry me as the Southern Side Current had done before, and so as to take from me all Government of the Boat; but having a strong Steerage with my Paddle, I went at a great rate, directly for the Wreck, and in less than two Hours I came up to it.
这时,海面上已风平浪静,我很想冒险坐小船上那失事的船上看看。我相信一定能找到一些对我有用的东西。此外,我还抱着一个更为强烈的愿望,促使我非上那艘破船不可。那就是希望船上还会有活人。这样,我不仅可以救他的命,更重要的是,如果我能救他活命,对我将是一种莫大的安慰。这个念头时刻盘据在我心头,使我日夜不得安宁,只想乘小船上去看看。我想,这种愿望如此强烈,自己已到了无法抵御的地步,那一定是有什么隐秘的神力在驱使我要去。这种时候,我如果不去,那就太愚蠢了。所以,我决意上船探看一番,至于会有什么结果,那就只好听天由命了。
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The development speed of gynogenetic embryos was later than that of the control group, and aneuploids were found in this study. The obvious improved survival of trochophore larvae with a peak at 40s UV exposure suggested the presence of a Hertwig effect in the gynogenesis of A. pectinata. When sperms were irradiated for 40s, the cleavage rate was relatively high (51.2%), the developmental rate of D-larvae became zero, and the rate of haploid reached the highest (36.8%).
经紫外线照射的精子受精后所产生的单倍体胚胎发育速度慢于正常受精所产生的二倍体胚胎,各照射组均出现非整倍体。40s照射组中卵裂率达到51.2%,D型幼虫发生率为0,单倍体率最高,达到36.8%,出现"Hertwig效应"。
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The result showed that the influence of temperature and RH on average price and rate of first class of flue-cured tobacco was similar, which showed a trend of parabola curve with temperature or RH increasing. The maximum value of average price occur at 38.0℃ and 87.0%, the maximum value of the rate of first class occur at 37.6℃ and 86.5%. The result also showed that when the temperature or RH was in the range of 37.5℃ to 38.0℃ or 85.0% to 88.0%, psychrometric difference was 1.5~2.0℃, the average price and rate of first class would exceed 10 yuan per kg and 40% respectively.
结果表明:变黄阶段不同温湿度组合对均价及上等烟率的影响基本相似,温度对二者的影响大于相对湿度;均价及上等烟率随温度或相对湿度的升高而均呈迅速上升→缓慢上升→缓慢下降→迅速下降的变化趋势,均价的峰值分别出现在38.0℃和87.0%,上等烟率的峰值分别出现在37.6℃和86.5%;此外研究结果还得出:当温度恒定在37.5℃~ 38.0℃,相对湿度恒定在85.0%~ 88.0%,干湿球差为1.5℃~ 2.0℃时,均价、上等烟率分别可达到10元/kg和40%以上。
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Another reason for being more relaxed about the exchange rate is that the euro-area economy is looking perkier than for many years. The zone's GDP grew at an annual rate of 2.4% in the first quarter. That may seem unimpressive compared with America's 5.3%, but the important news was the changing composition of growth: consumer spending, which rose at an annual rate of 2.8%, looked healthier than for a good while.
轻松面对汇率的另一个理由是欧元区经济看起来比前几年要自信的多,本区今年第一季度GDP年增长率约2.4%,比起来美国5.3%的增长率虽然不令人印象深刻,但是其中重要的信息是增长结构的变化:消费支出年增长达到了2.8%,看起来要比以前健康许多。
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Another reason for being more relaxed about the exchange rate is that the euro-area economy is looking perkier than for many years. The zone's GDP grew at an annual rate of 2.4% in the first quarter. That may seem unimpressive compared with 's 5.3%, but the important news was the changing composition of growth: consumer spending, which rose at an annual rate of 2.8%, looked healthier than for a good while.
轻松面对汇率的另一个理由是欧元区经济看起来比前几年要自信的多,本区今年第一季度 GDP 年增长率约2.4%,比起来美国5.3%的增长率虽然不令人印象深刻,但是其中重要的信息是增长结构的变化:消费支出年增长达到了2.8%,看起来要比以前健康许多。
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At the salinity of 30, the animals respired and excreted at a low level. The respiration rate and ammonia excretion rate increased significantly at higher salinity of 35 and at lower salinity of 23 for the juvenile group or 20 for the one year old group.
幼参在23~30盐度、1龄参20~30盐度范围内,耗氧率和排氨率随着盐度的升高而降低,当盐度升高至35时,两者都明显升高(以盐度30为对照),当盐度降至20、16(1龄参)时,刺参耗氧率和排氨率均降低。
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The results showed that the respiration rate of J1Jm (Japan♀×Japan♂) and C1Jm (China♀×Japan♂) increased with increase in water temperature, but significantly decreased at over 18℃. The respiration rate in "Chinese red" and its half-sib families (C1Rh, J7Rh, RjRh) sharply decreased at 21℃, indicating that the "Chinese red" and its half-sib families adopted higher temperature. The changes in NH4-N excretion rate showed a similar tendency to the respiration during the experiment.
结果表明:J1Jm(皱纹盘鲍日本群体♀×日本群体♂)和C1Jm(皱纹盘鲍中国群体♀×日本群体♂)的耗氧率随水温的升高而上升,但超过18℃在21℃下耗氧率明显下降,RwRh与其半同胞家系(C1Rh、J7Rh、RjRh)的耗氧率拐点出现在21℃,说明&中国红&及其半同胞家系更适宜较高温度;各家系排氨率随温度升高的变化趋势与耗氧率基本相同。
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At equilibrium,the rate of the metal dissolution is equal to the rate of the cathodic reaction,and the rate of the reaction is directly proportional to the current density by Faradar's law ;therefore:(6)and the Nernst equation can be rewritten(7)where B is a constant and i0 is the exchange current density,which is defined as the anodiccurrent density at the standard electrode potential.
在平衡,金属溶解的率与负极反应的率是相等的,并且反应的率与电流密度直接地是比例由Faradar的法律;因此:(6)和能斯脱等式可以被重写(7) B是常数的地方,并且i0是交换电流密度,被定义作为正极电流密度在标准电极电位。
- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。