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Dell's share price immediately tumbled 6% to around $25, its lowest level in three years.

它的股价立即下跌了6%，降至25美元，三年来的最低水平。

In the video segmentation method based on DEMD, the intrinsic mode function with the lowest frequency is discarded and a simple and effective motion compensation method is adopted. As a result, the video segmentation method is no longer sensitive to abrupt change of luminance, object motion in shots, motion and zoom in/out of cameras, so that the precision of detecting shot boundaries is improved.

基于DEMD的视频分割方法除去视频帧中反映图像内光照分布与能量的最低频率固有模态函数(intrinsic mode function，IMF)分量，并选择一种简单有效的运动补偿方法，解决了传统基于直方图方法对光照突变、镜头内物体运动和镜头运动及拉伸的敏感问题，减少了镜头边界识别的误检率，在保证召回率不受影响的前提下提高了视频分割的精确度。

The denitration measures of coal-burning power plant could be adopted in the main sectors of NO generation and discharge. All kinds of denitration technology should be combined systematically to obtain the highest denitration effect at the lowest cost.

火电厂的脱硝措施可在NO产生和排出的主要环节中采用，应将各种脱硝技术进行有机的结合，实现以最低成本获得最高的NO脱除效果。

RESULTS: After ischemia-reperfusion injury, the rats had hydrouria, urine osmotic pressure depress, symptoms of carnine and urea nitrogen increasing. HE staining demonstrated that renal tubular epithelial cells were swelling, necrosis, and desquamate. Aquaporin-1 expression and its mRNA level was decreased; in particular, the expression and level were the lowest at day 1 after ischemia-reperfusion injury and recovered to normal value at day 5 after ischemia-reperfusion injury.

结果：大鼠肾脏缺血再灌注损伤后出现尿量增多、尿渗透压降低，血肌苷、尿素氮升高症状；苏木精-伊红染色示肾小管上皮细胞肿胀、坏死、脱落；水通道蛋白表达量及其mRNA含量均较对照组减少，这些变化于缺血再灌注损伤 1 d时最低，至缺血再灌注损伤 5 d时恢复正常。

We must not be alarmed if the fruits of this optimism ripen--if society, leavened to the very lowest strata by this kind of culture, gradually begins to tremble with wanton agitations and desires, if the belief in the earthly happiness of all, if the belief in the possibility of such a general intellectual culture changes into the threatening demand for such an Alexandrian earthly happiness, into the conjuring up of a Euripidean deus ex machina.

很长时间，有教养的人只以学者的姿态出现，实属惊人；甚至我们的诗艺也不得不从渊博的仿作演绎出来，即就韵律的主要作用而言，我们也见到我们的诗体不是出自乡土之音，而是源于博学雅言的艺术试作。

Furthermore, the generation of 4He is always 107 lower than that of tritium and proton for even the lowest energy of the incident deuteron measured so far.

此外， 4He 的世代比那总是107 低超重氢和氢核为事件氘核的最低的能量到目前为止被测量。

And then the effects of compositions on the mechanical performance, characteristic temperatures, thermal expansion and chemical stability of the glass were discussed. Researches on lead borate sealing glasses show that PbO/B2O3 ratio exerts the most important effect on glass network. ZnO is beneficial to stabilize the glass against devitrification . Bi2O3 has little effects on the sealing temperature, while it helps to adjust the thermal expansion coefficient of lead borate glasses in a definitive range. When 0.5～4 mol% GeO2 is introduced, the glass possesses the highest stability and lowest sealing temperature (400 ?C), which is desirable for low-temperature sealing.

通过对含铅的硼酸盐封接玻璃研究得出，PbO/B2O3比是影响玻璃网络最主要的因素；添加ZnO有助于增强玻璃的稳定性，抑制析晶；Bi2O3对高铅系列配方玻璃的封接温度影响不大，但可使铅硼系列玻璃体系的热膨胀系数在一定范围内可调；在高铅系列配方中，引入0.5～4mol%的GeO2可有效地抑制玻璃析晶，降低封接温度；最终获得了两种性能较好的低熔点铅硼酸盐封接玻璃配方，G3封接温度低达400℃，其PbO含量为54mol%左右，BL10玻璃的封接温度为440℃，但其铅含量大大降低，仅为36mol%。

At present, the company has produced a 3000 molecular weight dextran, which is the world's first production in the industrial production of the lowest molecular weight and the highest purity product.

目前，公司已经生产出了3000分子量的右旋糖酐，这是世界上第一次在工业生产中生产出分子量最低而且纯净度最高的产品。

The lowest of degree of polymerization of dextrin, with iodic action...

糊精的聚合度最低，和碘功能。。。

The results showed:①NOS activity was detected in every area of rabbit brain ,furthermore NOS activity in rabbit cerebellum was higher than diencephalon and brain stem,the lowest activity was found in cerebral cortex.

采用生化检测技术，借助分光光度计和一氧化氮合酶活性测定试剂盒测定了不同年龄家兔各个脑区内NOS活性，对NOS活性在不同年龄家兔脑内衰老变化规律进行了研究。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。