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自然沉积
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  natural sediment
     The AVS contents of cultured areas in Jingang village, Rushan bay and Jiaozhou bay are nearly equal and are both higher than that of natural area. It indicates that culture activity will alter the AVS content in the natural sediment.
     2.通过与其他海湾沉积物中AVS含量的比较,发现胶州湾养殖海区与乳山湾金港养殖海区的AVS含量基本接近,明显高于自然海区,说明养殖活动会改变自然沉积环境中AVS的含量。
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  natural deposition
     The POC natural deposition rate in the Jiaozhou Bay was determined as 250 mg·m~(-2)·d~(-1),th organic carbon burial efficiency of the bottom sediments in August was 32 %,and the buried organic carbon in August amouted to 13 % of the primary productivity in the water column of the Jiaozhou Bay.
     胶州湾颗粒有机碳的自然沉积速率为251 mg. m-2.d-1,底层对有机碳的埋置效率为32%(8月),埋置的有机碳占水层初级生产力的13%(8月)。
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  “自然沉积”译为未确定词的双语例句
     Taking advantage of image processing technology, the contour length of DNA molecule was measured automatically by a computer.
     利用计算机图像处理技术 ,对自然沉积DNA和拉直DNA分子AFM图像的长度进行了自动统计测量 ,并与DNA分子的理论长度进行了比较。
短句来源
     The results of the dynamic analysis illuminate that the liquefied area of the dam will be at the top of the coal ash body where coal ash deposits naturally.
     该灰坝的动力特性分析表明,灰坝的液化区分布在灰体的上部,主要是在煤灰自然沉积区,液化深度在ZOm左右,液化区离子坝的距离较远,因此对坝体不构成威胁。
短句来源
     The results show that the surface of NiTi treated by 1 mol/L NaOH aqueous solution exhibit a higher bioactivity because of formation of sodium titanate. The treated sample can form CO32- containing apatite layer after soaking in SBF for 3 d and reveal relatively little amount of Ni3+ ions releaseing in Hank's solution.
     结果表明,经1 mol/L NaoH溶液处理的NiTi合金因为钛酸钠的生成而具有较高的生物活性,在SBF中浸泡3 d后自然沉积含CO32-的类骨磷灰石,而且原子吸收光谱分析其在Hank’s溶液中的镍离子溶出量最少.
短句来源
     Through the comparison between the bearing capacity of tamped soil determined by different testing methods and that determined by load-bearing test, it is concluded that the general methods to determine the bearing capacity of the natural soil is not fit for determining that of the tamped soil. An empirical formula is proposed as: f k=0.4N 2+6.0N?
     通过对强夯地基各种测试方法确定的承载力与载荷试验结果进行对比分析 ,认为用于确定一般自然沉积土的承载力的常规方法不适用于强夯地基土 ,根据标贯试验击数与载荷试验结果之间存在的相关关系 ,提出了根据标贯试验击数确定强夯地基土承载力的经验公式 :fk=0 4N2 +6 0N。
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     T he variations of the speciation in Co re MS can be divided into two periods:the extractable forms of the elements have stable concentrations between 13and 4cm,which indicates the nature sources of the heavy metals;
     沉积岩芯重金属元素形态垂向变化规律及次生相富集系数表明,Cu、Mn、Ni、Pb和Zn在沉积岩芯13~4cm有效结合态含量较稳定,为自然沉积;
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  相似匹配句对
     On Natural Appreciation of the Beautiful
     自然审美
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     The Natural Meaning
     自然的心迹
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     deltaic deposit.
     三角洲沉积
短句来源
     UTILIZATION OF THE COMBINATION OF LOG SHAPES FOR EXPLANATION OF THE SEDIMENTARY ENVIRONMENT
     应用自然电位测井曲线解释沉积环境
短句来源
     ②the planar feature of natural gamma anomaly is closely relative to stratigraphic sedimentary feature;
     ②自然伽马异常平面特征与地层沉积特征关系密切;
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  natural sediment
Effects of natural sediment properties on test results in bioassays with oyster larvae (Crassostrea gigas) on sediment elutriate
      
Testing sediment elutriates with oyster larvae in a sediment-water system invokes specific problems related to natural sediment characteristics.
      
This protocol has been applied to the quantification of 12 individual PAHs, 8 individual PCBs and 8 PCB coeluted mixtures from two Standard Reference Materials and one natural sediment.
      
Characterization of ligand sites on natural sediment particles
      
Further, extraction with 5% acetic acid in 0.2% TFA-methanol was used for analyses of MCs in 34 natural sediment samples collected from Brno reservoir (Czech Republic) from April to October 2005.
      
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  natural deposition
All other wild taxa can be attributed to natural deposition.
      
Natural deposition of 18 to 387 eggs occurred on deionized water or on oak-leaf infusion.
      
As demonstrated by experimental investigations, the earth pressure coefficient ξ0 for natural deposition conditions is frequently not equal to unity, but less than it.
      
The structures reduce sediment transport, triggering natural deposition to heal channels enlarged by years of erosion.
      
Under the TP option, there is still natural deposition of sediments in the reservoir and water intake ponds.
      


The background region of the heavy metals and their background value were studied on their distribution pattern in the sediments of Bohai Bay together with the pollution sources. The study indicates:1. The sedimentary environment and the grain size of the sediments in Bohai Bay define the natural background distribution of the heavy metals Fe, Mn, Zn, Or, Ni, Cu, Pb, Co and Cd, i.e. lower concentration in the north part of the bay and higher in the middle and south parts of the bay as represented by the distribution...

The background region of the heavy metals and their background value were studied on their distribution pattern in the sediments of Bohai Bay together with the pollution sources. The study indicates:1. The sedimentary environment and the grain size of the sediments in Bohai Bay define the natural background distribution of the heavy metals Fe, Mn, Zn, Or, Ni, Cu, Pb, Co and Cd, i.e. lower concentration in the north part of the bay and higher in the middle and south parts of the bay as represented by the distribution pattern of Ni.2.Accumulation of some heavy metals from sewage drainage is most found within the isobath curve of 3-5 m off and between the Dagu arid Beitang estuaries, forming a sewage-influenced zone as represented by distribution of Pb.3.An arithmetic mean (+2 standard deviation) calculated from the concentration of heavy metals in fine sediments of the background region, or simply an upper limit value of the background region was used to represent the natural background values of the heavy metals in the fine sediments of the Bohai Bay: Zn-80, Cr-60, Ni-40, Cu-30, Pb-25, Co-15 and Cd-0.15 (ppm).4.The accumulation of heavy metals from sewage drainage in the estuary is not serious because of, partly, large silt discharge and high sedimentation rate.

渤海湾重金属的自然沉积分布受沉积环境和沉积物粒度组成的控制,可以Ni的分布为代表模式。在自然沉积的背景上某些金属在大沽口和北塘口附近水深<3—5m的河口潮间带,迭加了一人为的排污影响带,可以Pb的分布为代表模式。且据此可划分出渤海湾的重金属背景区。利用背景区细粒级类型沉积物重金属含量的上限值作为渤海湾细粒沉积物的背景值。河口重金属的积累,相对来说并不严重这与输沙量大及高沉积速率有关。

This paper discusses the mechanism of removal airborne fission productssuch as iodine.methyl iodine,and aerosol particle during a PWR core meltdownaccident.A multicompartment containment model-FIPREA for analyzing airbor-ne fission product transport and release to environment from comtainment is d-eveloped.The removal of fission products by decay,natural deposition on surf-ace or absorption in water film,filtration spray washout,steam condensation,leakage to the environment,and gas convection flow between multicompartmentrooms...

This paper discusses the mechanism of removal airborne fission productssuch as iodine.methyl iodine,and aerosol particle during a PWR core meltdownaccident.A multicompartment containment model-FIPREA for analyzing airbor-ne fission product transport and release to environment from comtainment is d-eveloped.The removal of fission products by decay,natural deposition on surf-ace or absorption in water film,filtration spray washout,steam condensation,leakage to the environment,and gas convection flow between multicompartmentrooms is simulaneously considered in this model.A computer program FIPREAfor calculating atomspheric release of airborne substances encoded based onthe some eomtainment model.The computational results are compared and ana-lyzed.It is found the results are satisfactory.

本文建立了分析压水堆事故工况下惰性气体、元素碘、甲基碘和气溶胶粒子等气载裂变产物由安全壳向环境转移和释放的多仓室安全壳模型——FIPREA 模型。此模型考虑了单层、双层和半双层三种型式的安全壳中堆芯源项、自然沉积、过滤器捕集、喷淋液吸附及泄漏等因素对气载裂变产物浓度变化的影响。根据此模型编制了分析裂变产物去除及对环境释放情况的计算程序。本程序可用于核电站设计或安全评审时事故释放量的分析计算。

From 1991 to 1993, we did monthly survey on Shen Bay of Niutou Island located at Zhujiang Estuary and quarterly survey on other several new caged fish grounds located at Daya Bay and Zhujiang Estuary. From the data of the water qualities and the sediment we got, we found that after years fish culturing, Shen Bay was serious polluted by organic. Its sulfide of sediment was 10 times high as that out of the Bay. During summer low tide period, its average of DO in lower water body was 3.58mg/L, the lowest was only...

From 1991 to 1993, we did monthly survey on Shen Bay of Niutou Island located at Zhujiang Estuary and quarterly survey on other several new caged fish grounds located at Daya Bay and Zhujiang Estuary. From the data of the water qualities and the sediment we got, we found that after years fish culturing, Shen Bay was serious polluted by organic. Its sulfide of sediment was 10 times high as that out of the Bay. During summer low tide period, its average of DO in lower water body was 3.58mg/L, the lowest was only 1.36mg/L. So, we considered that high sulphide of sediment and low DO of the lower water bady were the main degradational properties of caged fish culture in a bay.

以珠江口牛头岛深湾作为周年逐月监测点,采用点面结合的方法,同时对大亚湾和珠江口几个开发网箱养鱼多年的海湾作季度调查。通过渔场水质、沉积物的环境要素监测,发现海湾网箱渔场使用多年以后由于有机污染严重,沉积硫化物含量比湾外自然沉积高10多倍,在夏季小潮期,深湾下层水体溶氧量平均值仅为3.58mg/L,最低值为1.36mg/L。认为沉积硫化物高和下层水体溶氧低是渔场老化的特征。

 
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