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Results showed that shoot biomass of H. annuus was significantly higher than that of R. acetosa and R. hastatus; among three plant species, 134Cs specific activity in shoots was the highest in H. annuus after 50 d-treatment, however after 70 d-treatment, that in R. acetosa was the highest. Bioaccumulation ratio reached 1.5, 1.4 and 1.3 in R. acetosa, R. hastatus and H. annuus after 70 d-treatment, and the former two plants kept with trend of continuously increasing. Three plants were resistant to 134Cs contaminated soil and capable of translocating 134Cs from soil to plants. Among them, H. annuus removed greatest 134Cs amount in the aboveground part during the experiment period, and R. acetosa, R.

结果表明,向日葵地上部生物量显著高于酸模和戟叶酸模;处理50d时,向日葵地上部134Cs比活度在3种植物中达到最高,而在处理70d时,酸模地上部134Cs的比活度达到最高;处理70d时,酸模、戟叶酸模和向日葵对134Cs的富集系数均大于1,分别达到1.5、1.4和1.3,且前2种植物继续保持快速上升的趋势。3种植物对铯污染土壤具有一定的忍耐性,并具有较强的从土壤向植物转移铯的能力;在本实验期内(70d)向日葵对土壤中放射性铯的剔除能力最强,而酸模和戟叶酸模则具有更强的铯转移能力。

The results show that the CNTs are dispersed effectively by bell jar immersing precast block casting. The maximal tensile strength and the elongation of the AZ31/CNTs composites are enhanced by 41.3% and 119.4%, respectively, and the elastic modulus and micro-hardness are also raised by 67.8% and 66.9%, respectively, when compared with those of the as-cast AZ31 Mg alloys. The CNTs can greatly refine the grains of the composites, playing a good role in reinforcing the matrixes of AZ31 Mg alloy. The fracture sections of the composites mainly consist of dimples and prisms, which demonstrates quasicleavage fracture modes.

结果表明:钟罩压块法可以有效地将碳纳米管分散到镁合金熔体中;CNTs对AZ31镁合金的力学性能有较强的增强效果,与本研究中的铸造AZ31合金相比,AZ31/CNTs复合材料的最大抗拉强度和伸长率分别提高41.3%和119.4%,弹性模量和显微硬度分别提高67.8%和66.9%;CNTs对AZ31镁合金基体晶粒的细化作用显著,与镁基体界面结合较好;复合材料试样断口形貌由韧窝和撕裂棱组成,呈现准解理断裂特征。

The results show that the CNTs are dispersed effectively by bell jar immersing precast block casting. The maximal tensile strength and the elongation of the AZ31/CNTs composites are enhanced by 41.3% and 119.4%, respectively, and the elastic modulus and micro-hardness are also raised by 67.8% and 66.9%, respectively, when compared with those of the as-cast AZ31 Mg alloys. The CNTs can greatly refine the grains of the composites, playing a good role in reinforcing the matrixes of AZ31 Mg alloy. The fracture sections of the composites mainly consist of dimples and prisms, which demonstrates quasi- cleavage fracture modes.

结果表明:钟罩压块法可以有效地将碳纳米管分散到镁合金熔体中;CNTs对AZ31镁合金的力学性能有较强的增强效果,与本研究中的铸造AZ31合金相比,AZ31/CNTs复合材料的最大抗拉强度和伸长率分别提高41.3%和119.4%,弹性模量和显微硬度分别提高67.8%和66.9%;CNTs对AZ31镁合金基体晶粒的细化作用显著,与镁基体界面结合较好;复合材料试样断口形貌由韧窝和撕裂棱组成,呈现准解理断裂特征。

Based on the relevant movement between hard shaper cutter and grinding wheel, the movements of grinding wheel are studied. The shaping grinding point and the shaping grinding edge are made up with. In order to easily compare when shaping errors and cutting edge"s angles are the most excellent, uniform expressions for convex curved rake face of hard shaping cutter and spatial cutting edge curve are separately developed. The distributions of new profiling cutter"s shaping errors and cutting edges angles are analyzed. The relevant grinding wheel and cam are designed. Due to this paper, a new profiling hard shaping cutter has been manufactured successfully. At last experiments are made to test the performance of hard shaping cutter and all kinds of precision of hard gear.

本文直接从插齿刀与砂轮之间的相对运动关系出发,单独研究砂轮的运动,提出砂轮成形磨削点和砂轮成形磨削刃的概念;分别建立圆柱砂轮和圆锥砂轮磨削后硬齿面插齿刀的波形前刀面方程及空间切削刃方程;为便于比较何种情况下插齿刀的构形误差和切削角度能同时达到最优,分别对磨削五种不同硬齿面插齿刀所用的砂轮进行了廓形设计,并分析了插齿刀的构形误差和侧切削刃切削角度的分布规律;为插齿刀波形前刀面的磨削加工设计了相应的凸轮,用所设计的凸轮和近似的砂轮成功地制造出新构形法硬齿面插齿刀;最后进行插齿加工试验,检验新构形法硬齿面插齿刀的抗崩刃能力、耐磨性及被加工硬齿面齿轮的各项精度。

In bottomland, the erosion of stubble land of naked oats is 9.1% less than CK, while the erosion of stubble land of corn and no-tillage of vegetable is 123.71% and 229.07% more than CK.

以耕翻地为对照,在滩地上莜麦留茬地的风蚀量减少了9.1%,而玉米留茬地、免耕菜地的风蚀量则比对照分别增加了123.71%和229.07%。

The correlation coefficient between the fractal dimension of soil water-stable aggregates in Beibei Karst mountains and organic matter, total N, total K, total P, available N and P and K, total exchangeable base and pH are:-0.617,-0.532, 0.798〓, 0.450,-0.550, 0.724〓, 0.652〓,-0.489, 0.781 (〓: correlation is significant at the 0.01 level,〓: correlation is significant at the 0.05 level) respectively.

北碚岩溶山地表层土壤的水稳性团聚体分形维数与有机质、全N、全K、全P、速效N、速效K、速效P、交换性盐基总量、pH的相关系数分别为-0.617、-0.532、0.798〓、0.450、-0.550、0.724〓、0.652〓、-0.489、0.781(**:α=0.01水平显著;*:α=0.05水平显著):对26个样地60个样品的水稳性团聚体分形维数与养分指标的相关分析表明,分维值与有机质、速效N、全N的相关系数分别为-0.410、-0.452、-0.522,达到显著水平。

However, the helium isotope analysis data are quite different between them. The abnormal of helium isotope made sure of extraterrestrial origin of iron cosmic spherules.

宇宙球粒的氦同位素分析值却截然不同;3He/4He×10^(-8)分别为:57.50±2.16和1.23±0.43;4He×10^(-8)cm^3 STP/g分别为:55.54和809.6;然而宇宙球粒的氦同位测定值都比各自的母岩高出许多;氦同位素的异常为所发现的宇宙球粒的地外来源更加确定。

The results shown that the oil-saving rates of fuel oil and lubricating oil are 5 % and 50% respectively by using GRT energy-saving oil additive, it have reached the level of same kinds of products in 80's from abroad; the cylinder wear of DONGFENG truck and JIEFANG was reduced by 24% and 33% respec-tively; the GRT additive improved obviously the seal property of engine cylinder, not only increasing the cylinder pressure nd the output power of engine to rise the acceleration and cold starting properties, but also improving the combustion situation of the fuel oil to decrease the environmental pollution from the exhaust of truck.

结果表明,应用GRT节能油添加剂可以分别节约燃料油5%以上和机油50%以上,达到了八十年代国外同类产品的先进水平;能使东风牌汽车和解放牌汽车的汽缸磨损分别降低24%和33%以上;使用GRT添加剂可以明显地改善发动机汽缸的密封性,不仅提高了汽缸压力和发动机的输出功率,使其具有良好的加速性和冷起动性,而且改善了燃料油的燃烧状况,从而减少了汽车尾气对环境的污染。

With comparing the reference values of the sensor-level, the Averaged Root Mean Square Error of position, velocity, and acceleration were found about 77.08%, 60.10%, and 32.31% improved. Also, the performance indexes of position, velocity, and acceleration with the local-processor were found to be larger (about 47.91%, 30.33%, and 12.71%) than with the global-processor, respectively.

经蒙地卡罗电脑模拟结果,验证所采用的联邦α-β-γ滤波器,可减少计算量的负荷,提升滤波器的运算速度,且在全域处理器中使用之资讯融合演算法,无论在位置、速度及加速度之估算误差收歛上,均有优异的性能,相较於感测器层平均效能分别提升了约77.08%、60.10%及32.31%;相较於区域处理器层平均效能分别提升了约47.91%、30.33%及12.71%,验证本研究所提出之资讯融合演算法,可明显改善追踪精确度。

RESULT: In vitro,the IC_(50) of Que of inhibiting the production of lipid peroxides in homogenates from rat heart,brain,and CCl_(4) damaged liver in mice and H_(2)O_(2) induced hemolysis is 0.4×10~(-4),0.2×10~(-4),0.5×10~(-4),0.3×10~(-4) mol/L,separately,while that of TP is 0.7×10~(-4),7.8×10~(-4),1.1×10~(-4),0.6×10~(-4) mol/L,separately.

结果 :在体外,Que和TP均可剂量依赖性地抑制Fenton反应导致的大鼠心、脑匀浆和CCl4毒化小鼠肝匀浆中过氧化脂质的生成和H2 O2 诱导的红细胞溶血:Que的IC50 分别为:0 4× 10 -4,0 2× 10 -4,0 5× 10 -4,0 3× 10 -4mol/L ;TP的IC50 分别为:0 7× 10 -4,7 8× 10 -4,1 1×10 -4,0 6× 10 -4mol/L。

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推荐网络例句

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。