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1.
<正>It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch  相似文献   

2.
I can honestly say it was the best of times and the worst of times. I was joyfully expecting my first child at the same time that my once-energetic, zestful mother was losing her battle with a brain tumor.  相似文献   

3.
The pulse-control operation technique which alternates between total reflux operation and total efflux operation in batch distillation was studied along with the minimum amount of slop cut. Total reflux time was confirmed by dynamic simulation, and total efflux time was adopted by statistic method. For the mixture of hexane and cyclohexane and the traditional constant reflux ratio operation strategy, the amount of slop cut is 1.8-2.1 times of the minimum amount of slop cut; whereas for the pulse-control operation strategy, it is 1.2-1.4 times of the minimum amount of slop cut. So compared with the traditional constant reflux ratio operation, the pulse-control operation can decrease the amount of slop cut and operation time, and meanwhile, enhance separation efficiency and yield.  相似文献   

4.
In this paper, a unified matrix recovery model was proposed for diverse corrupted matrices. Resulting from the separable structure of the proposed model, the convex optimization problem can be solved efficiently by adopting an inexact augmented Lagrange multiplier (IALM) method. Additionally, a random projection accelerated technique (IALM+RP) was adopted to improve the success rate. From the preliminary numerical comparisons, it was indicated that for the standard robust principal component analysis (PCA) problem, IALM+RP was at least two to six times faster than IALM with an insignificant reduction in accuracy; and for the outlier pursuit (OP) problem, IALM+RP was at least 6.9 times faster, even up to 8.3 times faster when the size of matrix was 2 000×2 000.  相似文献   

5.
郭琴 《海外英语》2014,(9):195-196
Qu Qiubai is a Marxist,proletarian revolutionist,great thinker and theorist who was never afraid of conducting creative thinking.It is creative thinking that have helped Qu Qiubai to accurately feel the pulse of the times,to timely respond to the requirement of the times and to scientifically answer the realist question raised by times in carrying out the China’s revolutionary theory into practice.In a word,creative thinking gave full demonstration to Qu Qiu bai’s time value by following the general trend and requirements of history and keeping up with the times.  相似文献   

6.
太阳大爆炸     
An instrument of the Soho satellite tooka picture of a huge blast on the Sun on 1st July2002.The solar eruption was more than 30times the length of the Earth's diameter.  相似文献   

7.
The effects of the electro-deposition conditions on the crystal structure and the properties of electrolytic manganese dioxide(EMD) were investigated in this paper. The results show that EMD was γ-crystal, with sand-like rough interface. The optimal preparation conditions of EMD were 30 min deposition time, and p H=1.0 in Mn SO4-H2SO4 solution at 50 ?C. Surfactant(P1) was conducive to the uniform and stable surface of γ-Mn O2 film, the impedance and the specific surface area of the electrode modified with γ-Mn O2 increased by 21.4 times and 75.6 times, respectively. The redox reversibility and the resolution ratio of characteristic peaks with the modified electrode were significantly improved in the benzodiazepines electrochemical reaction. The achievement illustrated that the controllable synthesis of γ-Mn O2 film thickness was practical in electrochemical sensors, and the determination reliability of benzodiazepines was improved with γ-Mn O2 modified electrodes used in environment monitoring technology.  相似文献   

8.
五天(英文)     
It was love at first sight On the Second of July Met her on the third floor Four times in one night It was a little bit of magic And the time stood still She took me to another side She got the key to my will Tell me how could such a good thing only last...  相似文献   

9.
关于寿命分布NBU(2)类的若干封闭性质   总被引:1,自引:0,他引:1  
Some new results about the NBU(2) class of life distributions were obtained. Firstly, it was proved that the decrease with time of the increasing concave ordering of the excess lifetime in a renewal process leads to the NBU (2) property of the interarrival times. Secondly, the NBU(2) class of life distributions is proved to be closed under the formation of series systems. Finally, it was also shown that the NBU(2) class is closed under convolution operation.  相似文献   

10.
Kaifeng was called Bianliang or simply Bian in ancient times. The "capital of seven dynasties" is one of the six ancient cultural centres and capitals of China. Among the tourist centres of Kaifeng are the Iron Pagoda, the Xiangguo Temple, the Dragon Pavilion, the Imperial Street of the Song DynastyCapital City, and so on.  相似文献   

11.
A finite random graph generated by continuous time birth and death processes with exponentially distributed waiting times was investigated, which is similar to a communication network in daily life. The vertices are the living particles, and directed edges go from mothers to daughters. The size of the communication network was studied. Furthermore, the probability of successfully connecting senders with receivers and the transmitting speed of information were obtained.  相似文献   

12.
Bernara Jackson is a free man today,but he has many bitter memories.Jackson spent five years in prison after a jury wrongly convicted him of raping two women.At Jackson's trial,although two witnesses testified that Jackson was with them in another location at the times of the crimes,he was convicted anyway.Why?The jury believed the testimony of the  相似文献   

13.
I was in a lift on rny way to my friend's flat. Suddenly the light in the lift went out, and the lift was out of order. I was very frightened because I was alone in it.I tried to force the door open, but I failed. So I felt for the alarm button and pressed it several times.  相似文献   

14.
In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the unified reference coordinate system. A flexible planar calibration pattern was introduced to the calibration process, which can be arbitrarily placed and from which the known feature points can be extracted to construct other unknown feature points. With the known intrinsic parameters, the laser projector plane equation was fitted by the multi-noncollinear points, which were acquired through the principle of triangulation and the projective invariance of cross ratio. With this method, the strict alignment and multiple times of coordinate transformation can be avoided. Experimental results showed that the arithmetic mean of the root mean square (RMS) error of distance was 0.000 7 mm.  相似文献   

15.
Emperor Wu of Liang Dynasty sacrificed himself to Tongtai Temple for four times. The event is very fa-mous in Chinese Buddhism history, but the evaluation for it is quite different. Emperor Wu was enlightened by the worshiping Buddha behavior of Indian Ashoka. Emperor Wu's action was a simulation of Ashoka deeds, judging from the similarity between the two charity events and his admiration of Ashoka. Emperor Wu's worship for Asoka opened up a new perspective for us to study the history of Chinese Buddhism.  相似文献   

16.
We investigated the photocatalytic degradation of dye wastewater by using titanium dioxide (TiO2) coated on a coal cinder. The coal cinder was used as the carrier, with a thin film of TiO2 coated on it by using the sol-gel method. Using the Congo red as the model pollutant for dye wastewater, we studied the decolorization efficiency, and effects of TiO2 film thickness and roasting temperature on the efficiency. We also evaluated the recycling and regeneration of the immobilized TiO2 (TiO2/cinder). Results show that the decolorization rate of Congo red solution was more than 98% after 2.h treatment when we used TiO2/cinder calcined at 500 ℃ for 2 h and coated four times as the photocatalyst. At the same time, the TiO2/cinder remained high catalytic activity after being reused and regenerated for many times.  相似文献   

17.
Country Life     
I looked around me.I had been up here several times in June and July and Icould remember the sunshine,the smell of the warm grass,and the scent of flowersand pines that came up the hill from the valley below.But it was hard to relate thesmiling landscape of last summer with this desolation.The flat moorland on the fell top was a white immensity rolling away to the hori-zon with the sky pressing down like a dark blanket.I could see the farm down there  相似文献   

18.
《海外英语》2003,(5):6-8
Making Mother' s Day more meaningful one word at a time. Maybe it was the best of times. Perhaps it was the worst. No matter how angelic or antagonistic your mom was, this Mother' s Day provides a fresh opportunity to let her know how you feel now.  相似文献   

19.
张利萍 《海外英语》2012,(13):199-201
In Vanity Fair Thackeray clearly demonstrated his view of women through the characterization of the two main female figures.In Thackeray’ s opinion,Becky Sharp was a rebellious figure,the Victorian " adventuress",while Amelia was the traditional submissive Victorian woman," Angel in the House".Via the narrator’ s comments,the author expressed his own view of women.On the one hand,he approved of Becky’ s rebellion,self-consciousness,courage,self-reliance in times of adversity,and on the other hand disapproved of Amelia’ s weakness,passiveness.As victims of the patriarchal society,both of the women were accorded with much sympathy.  相似文献   

20.
Arthur was the first son of King Uther and 1)heir to the 2)throne.However,these were troubled times.Merlin,a wise 3)magician,said that the baby Arthur should grow up in a secret place and no one should know who he was.  相似文献   

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