查询词典 four-fold

The Mo,U elements about normal geochemical method have a closely relationship with hidden uranium deposits. It has studied which methods is the most effective about this four methods through compare to drill material.After making compositive interpretation we can find this four method are effective on hidden uranium ore.We have the follow results: CR-39 track method and gama-ray spectrometer survey is better method than geochemical method.

最后通过这些单一方法实测测量结果与已知钻孔资料进行比较可以对该勘查方法的铀矿勘查效果进行评价；再从方法的单一研究到方法的综合研究，得出伽马能谱测量和固体径迹测量有效的结合，可以得到隐伏铀矿化的深部信息，而常规化探测量则可以有效划分近地表、深部铀矿化的区域。

Says, aid to agriculture fell almost sixty percent from nineteen eighty-four to two thousand four.

联合国食品和农业组织说，农业是世界70%的穷人的主要支撑。

Says, aid to agriculture fell almost sixty percent from nineteen eighty-four to two thousand four.

大约有180个国家代表出席了上周在罗马举行的这个为期三天的会议。

Twenty-four crossbred early weaned piglets with an average initial weight of 6.10±0.35kg,weaned at 28±1 day of age,were divided into four groups to determine the effect of supplemental acidifiers on gastric acid secretion,digestive enzyme activities, and intesinal microflora.

添加0.25 %复合酸提高了胃蛋白酶(P.10)和胃酸分泌(P.10)，显著提高了十二指肠内容物中胰蛋白酶和淀粉酶活性(P.05)，添加1.5 %柠檬酸有提高上述两种酶活性的趋势(P.15 ，P.10)，但对胃酸和胃蛋白酶分泌没有影响，显著降低了结肠大肠杆菌数量(P.05)。

Golden Notebook, which is grouped into four notebooks, through black, red, yellow, and blue these four notebooks to symbolize the outside world and the subjective world, reflecting the multi-modalities spirits of dramatic personae Anna-----a perplex and agravic soul.

《金色笔记》由四本笔记构成，通过黑，红，黄，蓝四本笔记象征并不仅是外部世界，它的另一端同时又瞄准人的主观世界，旨在反映主人公安娜思想的多形多态—一个迷乱，失重的灵魂。

The experiments for determining the reaction kinetics of Daqing atmospheric residue were performed in a continuous flow, expanded bed rector. Four-lumped reaction kinetic model was developed to account for various feed and product fractions of Daqing atmospheric residue (gases, gas oil, residue and coke). The amounts of olefins and alkyls in the gas products were further analyzed to determine reaction kinetics of gas product distributions. Hence, a combined five-lumped reaction kinetic model was obtained for catalytic pyrolysis of Daqing atmospheric residue. The kinetic constants both in four-lump model and five-lump model were evaluated. A simulator for catalytic pyrolysis process was developed by incorporating the five-lumped kinetic model into the hydrodynamic flow model.

其次利用改进的固定流化床装置考察大庆常压渣油催化裂解反应规律，筛选反应工艺参数；分析了催化裂解工艺存在的主要化学反应类型，提出了渣油一次反应和二次反应网络图；将反应原料油作为单独集总组分，而将产品中的轻质油、气体、焦炭分别作为集总，从而建立了四集总动力学模型；在此基础上，把气体产物中的目的产物低碳烯烃独立划分，得到五集总动力学模型；采用最小二乘法分析实验数据，分别得到四集总动力学模型和五集总动力学模型中各集总间相互反应转化的反应速率常数。

Note: flameproof push button box with four button, four indicators, two ammeters, one voltage meter and one switch

说明：隔爆型按钮箱，面板装有4只按钮，4只指示灯，2块电流表，1块电压表，1只开关。

Finally, elaborated four arias in the teaching application and four aria vocal music teaching significance.

最后，论述了四首咏叹调在教学中的应用和四首咏叹调的声乐教学意义。

The Five Ascendants were, then, superimposed on to the Four Positions and in turn on to the Four Seasons through the mediation of the Five Positions.

五行与四时的相配是通过五方或五位的，最初相配未能完全整齐划一，这是显而易见的。

It is found that (1) the aquatic protozoa communities consists of thirty-six taxa in twenty-six genera and twenty-four families;(2) the groups of ecological function include: Photosynthetic autotrophs (P groups, 25%), Bactivores detritivores (B groups, 44.44%), Saprotrophs (S groups, 2.78%), Algivores (A groups, 11.11%), Nonselective omnivores (N groups, 11.11%) and Raptors (R groups, 5.56%);(3) according to the characteristics of karst water, substrates and mosses, four ecological types and eight sub-types of aquatic protozoa communities can be distinguished.

2水生原生动物群落含6个功能营养群。其中，原生动物光合营养群（P群，Photosynthetic autotrophs），占总数的25%；细菌取食者群（B群，Bactivores detritivores），占总数的44.44%；腐生营养类群（S群，Saprotrophs，占总数的2.78%；食藻者类群（A群，Algivores），占总数的11.11%；非选择性杂食者群（N群，Nonselective omnivores），占总数的11.11%；食肉者群，占总数的5.56%。(3)根据岩溶水流、基质和藓类植物特征，划分该区附生水生原生动物生态群落为4个类型和8个亚类型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。