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content and variation     
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  含量与变化
     Analysis on the content and variation trend of heavy metal in themarine organisms in Daya Bay
     大亚湾海洋生物体重金属含量与变化趋势分析
短句来源
  含量及变化
     The Studies on the Content and Variation Regularity of Flavone Active Component in Seabuckthorn Leaves
     沙棘叶黄酮含量及变化规律研究
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     The Content and Variation of Nutritive Elements on the Leaves for Natural Mixed Forest of Chinese Fir
     天然杉木混交林叶片营养元素含量及变化
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  含量及其变化
     STUDIES ON PHENOLIC CONTENT AND VARIATION IN SOILS OF CHINESE-FIR AND BROAD-LEAVED STANDS
     杉木林和阔叶林土壤酚含量及其变化的研究
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  “content and variation”译为未确定词的双语例句
     STUDY ON BODY FAT CONTENT AND VARIATION OF THE SERUM LIPID COMPONENTS OF MEAT-TYPE DUCKS
     肉鸭的体脂肪含量与血清脂类成分变化规律的研究
短句来源
     According to the content and variation of trace elements,the climate change can be divided into 5 stages:(223~196)ka BP,warm and humid,and in the pace with palaeosol S_(2);
     根据微量元素含量变化特征及其与地层的对应关系,将萨拉乌苏河流域中更新世晚期以来的气候变化划分为5个阶段:223~196ka BP,气候温暖湿润,相当于黄土高原S2古土壤发育期;
短句来源
     Germany. The content and variation of nonexchangeable ammonium in manured loessial soil and its availability for winter wheat were studied through a common plot experiment and a micro plot experiment using ~(15)N-labelled ammonium under field condition during wheat growing period The experimental results showed that manured loessial soil possessed a greater reserve of nonexchangeable ammonium;
     通过田间小区试验和~(15)N标记的微区试验,研究了(土娄)土中非代换铵含量、它在小麦生长期的动态变化以及其对小麦的有效性。 试验结果表明,(土娄)土具有可观的非代换铵贮量。
短句来源
     During the process of increase or decrease of soil moisture content in the unsaturated zone when rainfall infiltrates to recharge groundwater, the moisture potential gradient in the unsaturated zone, which contrals the direction and speed of soil moisture movements, varies regularly in response to different state of moisture absorbing or dewatering of soil, different initial moisture content and variation of moisture content of soil.
     降水通过包气带水分增加、减少和向下入渗补给地下水过程中,制约和控制岩土水分运动方向与入渗速度大小的水分势能梯度,因岩土吸水或者脱水状态的不同,初始含水量大小的不同和含水量的改变,而发生具有明显特征的则律性变化。
短句来源
     K2O content and variation reflect the evolution of the rock and K-metasomatism.
     钾质高低及变化可反映岩石演化程度和钾交代作用。
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      content and variation
    Among the controversial issues to understand Bcl-2 functions in vivo, is to establish its content and variation in tissues during an organismal lifespan.
          
    The results show that the content and variation of trace elements has experienced remarkably regular changes in the pace with coarse and fine sedimentary cycles of palaeo-aeolian sands to its overlying fluvio-lacustrine facies or/and palaeosols.
          
    The influences of type, shape, size distribution, pore ratio, moisture content and variation of vibration velocity on the dynamic shear strength of granules were studied.
          
    The results shed light on the causes of heterogeneity in GC content and variation in substitution rates observed in the chicken genome.
          


    In the survey domain, there are three stage ophiolites of middle Ordovician, mid-late Siliurian and middle Devonian, their ages getting younger from the south to the north. According to geological data, they have the same rock association, after recovered,similar to those of the typical ophi olites with the style of four layered texutres reported at home and abroad. On the basis of content and variation of the major oxides in various rocks relevant to ophiolite, combining the REE distribution pattern and...

    In the survey domain, there are three stage ophiolites of middle Ordovician, mid-late Siliurian and middle Devonian, their ages getting younger from the south to the north. According to geological data, they have the same rock association, after recovered,similar to those of the typical ophi olites with the style of four layered texutres reported at home and abroad. On the basis of content and variation of the major oxides in various rocks relevant to ophiolite, combining the REE distribution pattern and their geological characters, author suggests that the bottom metamorphic peridotite of these ophiolites would be a residue after the different degree melting of mantle and the basic complex, volcanic lava, diabase and leucocrate were formed by differentiation from the same host magma that was differential products of basaltic magma abstracted from the different degree fusion of mantle. Based on the facts that layered gabbro and ultramafic cumulate are less development, volcanic lava thiner in thickness, diabasic dyke small in size and intercalated shale absent in pelagic sediments, as well as, volcanic lava, gabbro and diabase all are of an alkaline-subalkaline in petrochemical composition and of an even to enriched REE distribution pattern. Those show that they could be formed in an epicontinental sea trough with a slowly spreading speed. Similarly,it is supposed that their formation would be formed in an environment near by a continental margin to an oceanic ridge, according to the gradual descent of alkaline content and abundance of REE and evening of REE distribution patternfor volcanic lava of three ages ophiolites( from the south to the north ), and combining the variation of initialt~(87)Sr/~(86)Sr ratio in volcanic lavas from middle Ordovieian, mid-late Silurian and middle Devonian ophiolites. Finally, illustrated by the polar distribution and occurrence features of ophiolite in conjunction with regional geologic data, three different age ophiolties were merged, following with the subduction of plate towards south and north respectively, into the folded mountain Systems on adjoining continental margin as crushed bits of the ancient oceanic crust. The Tarim plate was joined together with the Siberia plate in the line of Hobok valley basin by the end of middle Devonian time and then, this area gradually transformed into the environment of a platform sedimentation.

    研究区内有中奥陶世、中晚志留世和中泥盆世三期蛇绿岩,据其产出地质特征,它们均属断裂构造侵位,是蛇绿混杂体或叠瓦状侵位的蛇绿岩片。从蛇绿岩主要氧化物含量变化及有关比值特征,参考有关变异图解、稀土元素、过渡金属元素分配模式,结合蛇绿熔岩的~(87)Sf/~(86)Sr初始比值,讨论了它们的成因及其岩浆演化。在分析地槽沉积建造的基础上,认为它们类似于大西洋脊的热地幔柱成因,形成于陆缘深海槽(盆)的一个慢速的扩张脊,其环境应由近陆缘渐趋至洋脊(时代由老至新)。区内超基性岩依其Al_2O_3、CaO含量分为低铝型(唐巴勒、玛依勒山诸岩体)、高铝型(萨尔托海),前者部分熔融程度较高,后者相反。据其地质特征它们不是呈高温熔浆入侵,而是构造侵位本。三期蛇绿岩从南至北,时代由老到新,在地质发展中古板块具多期次活动,古洋壳曾发生过向南、北多次俯冲,并形成相应的褶皱山系,大陆向洋侧迁移。中泥盆世末塔里木板块北缘增生带与西伯利亚南缘增生带在和布克谷地一线发生第一次对接,海水向东、西迁移,研究区逐渐转化为台型沉积。

    The present work is a part of the cooperative project between Northwestern Agricultural University Shaanxi, China and Justus Liebig University, Gissen, W. Germany. The content and variation of nonexchangeable ammonium in manured loessial soil and its availability for winter wheat were studied through a common plot experiment and a micro plot experiment using ~(15)N-labelled ammonium under field condition during wheat growing period The experimental results showed that manured loessial soil possessed a...

    The present work is a part of the cooperative project between Northwestern Agricultural University Shaanxi, China and Justus Liebig University, Gissen, W. Germany. The content and variation of nonexchangeable ammonium in manured loessial soil and its availability for winter wheat were studied through a common plot experiment and a micro plot experiment using ~(15)N-labelled ammonium under field condition during wheat growing period The experimental results showed that manured loessial soil possessed a greater reserve of nonexchangeable ammonium; in the cultivated layer of 0—20 cm of the soil tested, the nonexchangeable ammonium amounted to 236 ppm N, constituting about 23% of the total N, and in the soil layer of 0—75 cm, it was 252 ppm N on average, constituting a quarter of the total N. Both the newly fixed ammonium and the ammonium oringinally fixed by soil played an imortant role in wheat growth; the former was predominated by its higher availability, while the latter was cheristerized by its greater quantity. The maximume net release (MNR) rate of newly fixed ammonium ranged from 38.0 to 70.5% in the soil layer of 0—75 cm, being much higher than that of the ammonium oringinally fixed by soil that ranged from 10.4 to 22.2% in the same soil layer. Howerver, the MNR amount of the ammonium oringinally fixed by soil was 12—72 ppm in the soil layer of 0—75 cm, it is much more than that of the newly fixed ammonium that was only 7.4—10.9 ppm in the same soil layer. It was also proved that the fixation of ammonium by clay minerals in manured loessial soil could act as a pool of N in soil and applying N tended to increase the nonexchangeable ammonium in soil.

    通过田间小区试验和~(15)N标记的微区试验,研究了(土娄)土中非代换铵含量、它在小麦生长期的动态变化以及其对小麦的有效性。试验结果表明,(土娄)土具有可观的非代换铵贮量。供试土壤耕层含非代换铵236ppm N,占该层土壤全氮的22.9%。0—75cm土体中平均含252ppm N,占全氮的四分之一多。(土娄)土“新固定”的和“固有的”非代换铵对小麦生长都有重要意义。前者以其高有效性占优势,后者则以其较大的供应量为特点。在小麦生育期内,0—75cm土体中的非代换铵最大净释放率,“新固定”的为38.0—70.5%,“固有的”为10.4—22.2%。以最大净释放量计,“固有的”(12—72ppm N)大于新固定的(7.4—10.9 ppm N)。非代换铵的最大净释放率随土层加深而减小。试验还表明,(土娄)土粘土矿物固定铵作用相当于一个蓄氮库。施用氮肥有增加土壤非代换铵的趋势。

    During the process of increase or decrease of soil moisture content in the unsaturated zone when rainfall infiltrates to recharge groundwater, the moisture potential gradient in the unsaturated zone, which contrals the direction and speed of soil moisture movements, varies regularly in response to different state of moisture absorbing or dewatering of soil, different initial moisture content and variation of moisture content of soil. Based upon the field tests and simulation experiments, and upon...

    During the process of increase or decrease of soil moisture content in the unsaturated zone when rainfall infiltrates to recharge groundwater, the moisture potential gradient in the unsaturated zone, which contrals the direction and speed of soil moisture movements, varies regularly in response to different state of moisture absorbing or dewatering of soil, different initial moisture content and variation of moisture content of soil. Based upon the field tests and simulation experiments, and upon the theory of soil moisture movement in the unsaturated zone, the variation of moisture potential gradientas represented in groundwater regine and in soil profile is discussed.

    降水通过包气带水分增加、减少和向下入渗补给地下水过程中,制约和控制岩土水分运动方向与入渗速度大小的水分势能梯度,因岩土吸水或者脱水状态的不同,初始含水量大小的不同和含水量的改变,而发生具有明显特征的则律性变化。本文以室内、外实验数据为基础,以非饱和水流运动定律为理论根据,探讨了岩土水势梯度这种变化在动态方面和剖面上的具体表现。

     
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