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Paul Erds once posed the following problem about real line R: is it true that, for every infinite set X, there is a closed set E with positive lebesgue measure such that E doesn't contain any subset similar to X (I.e., there is no subset of E, which is a linear homeomorphic image of X). In 1984, K. J. Falconer proved the following: for a decreasing sequence of positive numbers {xn} such that \%lim\%xn=0 and \%lim\%(xn+1)/=1, Erds problem has a partial positive answer.

叶盛 Paul Erds曾提出如下关于实直线R的问题：是否对R的每一个无限子集X，都存在一个具有正测度的闭子集E，使得E的任何子集都不相似于X(E的任何子集都不与X线性同胚)。1984年，Falconer证明了如下结论：对于一个满足limxn=0和lim(xn+1)/=1的单调递减的正实数列{x n}，Erds问题有一个部分肯定的解答。

Peach aphid (Homoptera: Aphididae), Myzus persicae, is one of the most economically important pests that result in decreasing of yield and quality of crops of agricultural and horticultural crops throughout the world.

桃蚜属同翅目，蚜科，瘤蚜属，是世界上分布最广、危害最大的蚜虫类害虫之一。

The 7 of 14 microsatellites had reached the homozygosis completely in familiesⅡat 18 The results suggested that the average N is decreasing and the genetic homozygosity is increasing with the improving inbred generation of WZSP.

WZSP近交系Ⅰ系F14-F16的14个微卫星座平均每个位点等位基因数为2个、平均杂合度为0.40、多态信息含量为0.26；Ⅱ系F15-F18的平均等位基因数为1.92，平均杂合度分别为0.32，多态信息含量为0.25；Ⅲ系F14-F17的平均等位基因数为2.17，平均杂合度为0.44，平均多态信息含量为0.32。

This may be due to hydrolytic chelating, precipitation and the sediment or hydrobioes attachment, absorption etc. The honewort had stronger ability of accumulating La because of its large leaf surface that could attach La. The accumulating ability of snail and fish to La was relatively weaker but some organs of them had higher contents of La especially in the intestines, shell of snail, and in gill, internal organs, scales, head, bone of fish, rare in muscle. The total accumulating quantities of La in each component of simulated aquatic ecosystem were a decreasing order of: sediment ＞honewort＞snail＞fish, and the sequence of bio-concentration facter was as follows: honewort＞snail＞fish.

2金鱼藻对La有较强的富集能力，主要通过枝叶表面吸附、吸收而富集；螺蛳对La也有一定的富集，并主要分布于肠、壳中，螺头中积累相对较少；草鱼对La的富集能力相对较弱，进入鱼体的La主要集中在鳃、内脏、鳞及头、骨中，肌肉中积累量较少；按质量计，稀土元素La在模拟水生态系统各部分中的积累量依次为：底泥＞金鱼藻＞螺蛳＞草鱼；各水生生物对稀土La的生物富集因子依次为：金鱼藻＞螺蛳＞草鱼。

It was called "Grave Chicken" in Kinmen for it nested in traditional grave; however, due to the decreasing amount of traditional graves and the increasing amount of traditional residences abandoned, Hoopoe now situates nest in traditional residence and farm mostly. It should be called "Traditional-Residence Bird" in replace.

戴胜常在传统墓穴筑巢，不过这种传统墓穴目前在金门已经非常少见取而代之的是越来越多荒废的传统古厝，现在的戴胜其中有八成以上是筑在古厝和农舍，也许金门的戴胜应该改名叫「古厝鸟」才是。

Using gene chips to screen an SSH library could efficiently identify those differentially expressed genes without the need to examine previously cloned genes, and increase the number of target genes by decreasing the examination of multiple'house-keeping'genes.

因此，基于SSH方法和基因芯片技术的特点，将两者联合应用将是有针对性地发现大量差异表达基因的有效方法，而且可以大大提高发现新基因的机率。

The change of energy states of corn stalk throughout the whole process could be divided into three stages such as fluctuating stage, decreasing stage and stable stage. Totally, the humification was a process of energy release.

腐解产物的热值与其有机碳、苯–醇溶性组分、水溶性组分、半纤维素和纤维素呈显著正相关，但与其灰分、木质素、腐殖物质含量呈显著负相关。

From the points of view of hydrokinetics, put forward the formula for movement parameters of set-out stage and short-range stage, lay a solid foundation for the theory of hydrokinetics mechanisms of large highspeed rockslide, offer the theoretical proof for the reconnaissance and design of large hydraulic power project, railway and highway, gain the ends of preventing and decreasing the disastes.

在试验研究的基础上，从流体动力学的观点出发提出了大型高速岩质滑坡启程和近程活动阶段运动参数的计算公式，为大型高速岩质滑坡全程流体动力学机理理论的建立奠定了良好的基础，为大型水电工程的勘察设计和铁路、公路新线勘察设计提供理论依据，达到防灾减灾的目的。

Results From 1988 to 2005, the morbidity and mortality of hydrophobia, AIDS, tuberculosis, gonorrhea and syphilis were increased, and those of other infectious diseases had a decreasing tendency tendency.

结果 清远市1988-2005年主要传染病发病率、死亡率呈上升趋势的病种有狂犬病、艾滋病、肺结核、淋病和梅毒；其他传染病的发病率、死亡率呈下降趋势。

The results indicate that the flow stress of the alloy increases with increasing strain rate and decreasing deformation temperature. The flow stress increases with increasing strain until the stress reaches the peak value, then the flow stress remains constant, which indicates that dynamic recrystallization happens during deformation. The flow behaviors are described by the hyperbolic sine constitutive equation, and the activation energy calculated is 337.75 kJ/mol. The as-forged microstructure consists of refined α2/γ and γ grains, and the grains are much homogeneous than before. The B2 phase distributes uniformly at the grain boundary of α2/γ and γ grains. The B2 phase decreases with increasing deformation temperature.

结果表明：流变应力随着应变速率提高和变形温度降低而增大；在变形过程中，流变应力随着变形量增大而增大，当流变应力达到峰值后趋于平稳，表明合金在变形过程中发生了动态再结晶；热变形过程的流变应力可采用双曲正弦本构关系来描述，平均激活能为337.75 kJ/mol；从合金的组织演化过程中可以看出，合金中不均匀的原始组织得到明显均匀化，变形后的组织是由α2/γ层片晶团和γ晶粒组成的双态组织，在α2/γ层片晶团和γ晶粒的晶界交界处发现分布均匀的B2相，并且随着变形温度升高B2相数量逐渐减少。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"