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the central position
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  中心位置
     The central position of electronic localization in one-dimensional nanometer materials is calculated by using one-dimensional random nanometer chain model and considering the second-neighbor interaction.
     从一维纳米随机链模型出发,在考虑近邻、次近邻相互作用的情况下,运用多对角全随机厄米矩阵求解方法计算了一维纳米材料的电子局域态中心位置
短句来源
     In this test the horizontal grids are 103×103,the distance is 10km, There are 33 levels at Perpendicularity, the central position is located at the point (31.00°N,117.66°E).
     水平网格为1 0 3×1 0 3,格距为1 0km ,垂直分33层,中心位置为31 0 0°N、1 1 7 6 6°E。
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     The central position and the absorption coefficient of 9μm band of Si samples are studiedih the temperature range from RT to 475℃ by FTIR spectrometry and Hall coefficient tech-niques.
     利用变温FTIR测量和变温Hall效应测量方法,探讨了在室温(RT)至475℃温度范围内,硅中9μm峰的中心位置及其红外吸收系数随温度变化的规律.
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     And by ensuring the working voltage to 39kV~42kV, and adjusting the central position of the corona wire and adding an exhaust at the steam tracing, the electro tar precipitator can be operated continuously, and the on stream factor of it has been extended.
     通过稳定工作电压在38kV ̄42kV,调整电晕丝中心位置,在蒸汽伴热管上增设排气口等措施,确保了电捕焦油器的连续运行,成功地提升了电捕焦油器的开工率。
短句来源
     the algorithm of barycenter convergence and gobbet feature decision are used to realize the accurate location of the central position.
     采用重心聚合和团块特征判定算法,实现中心位置准确识别定位。
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  “the central position”译为未确定词的双语例句
     Methods:The orbscan slit scan corneal tomography/pachymetry system was used to detect the average corneal thickness in the central position of cornea,1.5、2.5、3.5 and 4.5 mm distance from the center of cornea in 35 patients (70 eyes)with type 2 diabetes and 20 healthy perons as a control group.
     方法:应用Orhscan生物测量系统对2型糖尿病患者35例(70只眼)角膜进行厚度检测,分别计算中央、距中心1.5、2.5、3.5、4.5mm处平均角膜厚度,并以20例正常健康眼角膜作为对照。
短句来源
     Conclusions The central position of dacryocystorhinostomy should be 0. 2 cm above the front of the axilla of the middle turbinate, to make an curved mucous membrane incision 0. 8 cm above and 0. 4 cm below the front of the axilla of the middle turbinate and bone ostium about 1. 2 cm×1. 0 cm. It is the best position in endoscopic dacryocystorhinostomy.
     结论以中鼻甲腋前上0.2 cm为手术造口中心点,中鼻甲腋前上0.8 cm为上界,腋前下0.4 cm为下界,作弧形黏膜切口及1.2 cm×1.0 cm骨孔,此为鼻腔泪囊造口的最佳位置;
短句来源
     Verbs are the important part of speech and phrases as the most basic unit of syntactical analysis in Chinese take the central position in every linguistic unit and act as the indispensable part in grammatical and semantic analysis, In the teaching of Chinese to the foreigners, the teaching of phrases, especially verb phrases, is an important part.
     动词是汉语里非常重要的构句成分,而词组是句法分析最直接最基本的单位,在语言各级单位中它处于中心地位,词的语法分析和语义分析,都离不开词组,因此,对外汉语教学中词组的教学,特别是动词词组的教学是一项非常重要的内容,对二语学习者动词词组的偏误进行分析也具有非常重要的实践意义。
短句来源
     Measuring the Central Position of the Laser Interference Rings and its Application
     激光干涉环圆心位置测定技术及应用
短句来源
     Irradiation channels and capsules are put into the central position of the core (K11).
     堆芯中心K11位置放置不同部件。
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  相似匹配句对
     central metal;
     中心金属;
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     Central pain
     中枢性疼痛
短句来源
     the Central and the Local;
     二是处理好中央与地方的关系;
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     The central Station
     《中央车站》——本片获1998年奥斯卡最佳外语片提名
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     The Position
     立场
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  the central position
The length of peptide fragments and the secondary structure of amino acids in the central position of the peptide fragments were also analyzed.
      
The elastic body has the form of a shaft with a circular cracked cross-section, the crack being a segment of a diameter, not necessarily in the central position.
      
the central position of the entorhinal region in circuits such as the entorhino-hippocampal loop, entorhinol-insula and entorhino-orbitofrontal reciprocal connections).
      
They further underline the central position of theSisymbrieae and the isolated position of theHeliophileae.
      
The present circumscription ofCentrospermae, including the "central position" of the closely relatedMolluginaceae-Aizoaceae-Phytolaccaceae, and the divergence of the other centrospermous families are discussed.
      
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The characteristics of the spatial growth of surface acoustic wave (SAW) in the excited interdigital transducers (IDT) are observed and measured quantitatively. Both the method of dark field imaging and that of simple optical probing have been used. In the experimental setup, the detected optical intensity is the result of superposition of both diffracted optical beams produced by the acoustic waves propagating in two opposite directions. The periodic IDT and linear FM IDT deposited on the substrates of Y-cut...

The characteristics of the spatial growth of surface acoustic wave (SAW) in the excited interdigital transducers (IDT) are observed and measured quantitatively. Both the method of dark field imaging and that of simple optical probing have been used. In the experimental setup, the detected optical intensity is the result of superposition of both diffracted optical beams produced by the acoustic waves propagating in two opposite directions. The periodic IDT and linear FM IDT deposited on the substrates of Y-cut Z-pro-pagation LiNbO3 have been investigated. For the periodic IDT, the experimental investigations show that the superposed intensity of SAW in the central position of IDT is minimum, then it grows with the distance from the centre section. The growth is symmetric in both directions of the excited IDT. In the case of Linear FM IDT, the experimental results indicate that in the central position of the resonantly excited finger pairs the superposed intensity of SAW is minimum too, but then withthe distance from the central position, the spatial growth of SAW in two directions are asymmetric.Theoretical calculations are also made by two ways. One of them is performed by the multiplication of the admittance matrixes as employed by Smith, considering imped-.ance discontinuity at each interdigital electrode edge. The other can be obtained from the analytical expression of the generation characteristic of SAW for periodic IDT, which is derived by Shui. The results obtained by both methods roughly agreed each other. The experimental data may be explaned qualitatively by these theories. But some discre-pencies are presented and discussed breifly.

本文利用暗场法和光探针技术对叉指换能器,特别是线性调频叉指换能器,激发表面声波的生长特性进行了观察和测量。并且利用有关的理论进行了计算。实验和理论结果一致表明在共振激发指对的中心位置,声强极小;离开中心位置,声强迅速增长。对于周期性叉指换能器,向两侧增长是对称的;而对于线性调频叉指换能器,向两侧增长是不对称的,向高频端的增长比向低频端的更强,因而形成线性调频叉指换能器向两端辐射的不对称性。但是在实验结果与理论结果的比较中,也出现一些问题,我们对此进行了初步的讨论。

The upper limbs of 23 adult cadavers were dissected and the internal structures of the median nerve were studied for microsurgery of the nerve.Under operative micros- cope(24X),the median nerves of 20 cadavers treated with 10% acetic acid were dissec- ted.The median nerves of the remaining three were cross-sectioned,inch by inch,and stained with Sudan Ⅲ for microscopic observation.Microscopic ptotographs were taken to visualize the intra-neural topography of motor bundles or bundle groups. 1.The morphology,topographic...

The upper limbs of 23 adult cadavers were dissected and the internal structures of the median nerve were studied for microsurgery of the nerve.Under operative micros- cope(24X),the median nerves of 20 cadavers treated with 10% acetic acid were dissec- ted.The median nerves of the remaining three were cross-sectioned,inch by inch,and stained with Sudan Ⅲ for microscopic observation.Microscopic ptotographs were taken to visualize the intra-neural topography of motor bundles or bundle groups. 1.The morphology,topographic relationships,size and number of bundles of the median nerves were observed under microscope and were recorded. 2.At the level of the arm and forearm,the nerve trunk and its internal bundles appear to twist to a certain degree in the way of external rotation from the distal to proximal. 3.The motor bundles of the thenar muscles emerge at the level about 40.1mm below the styloid process of radius.They enter the nerve trunk anteriorly on the radial side,and run upward at the Rower part of the forearm,and continue postero-laterally and appear as a admixture of sensory and motor nerves.At the mid-portion of the fore- arm,they are situated posteriorly,while at the level of antecubital fossa and above, they occupy the central position and finally most of the bundles join the medial head of the median nerve. 4.The motor bundles that supply the flexor muscles of the forearm are located anteriorly and posteriorly in separate portions after entering the nerve trunk.At the level of the arm,these two portions of median nerve are mixed bundles but motor nerve fibers predominate. 5.The fundamental method of funicular suture were discussed in relation to the intra-neural topography of the median nerve.

根据显微外科技术发展情况,我们在23例成人上肢研究了正中神经内部结构。其中20 例用醋酸溶液滴浸下,在手术显微镜下解剖分离,3例作断面对照观察。重点记录运动束或束组的局部定位。一、观察测量了正中神经干的形态、大小、束数,绘制了正中神经干断面的局部定位图。二、正中神经干及其内部束组在前臂及上臂均有一定程度的扭转,都是由下向上呈外旋性移动。三、鱼际肌枝发出平面在桡骨茎突下方40.1毫米,从桡侧前方入神经干后,沿桡侧上行,至前臂下部转至后外方。以后逐渐混合,混合后在前臂中部占居后方,至肘窝以上占居中央部分,最后多数加入内侧头。四、前臂浅组屈肌有关肌枝,进入神经干内分居前后两部。在上臂神经干的前后两部,仍然是以运动纤维为主的混合束组。五、讨论了显微外科神经束膜吻合法与神经干内部结构局部定位的关系。

This paper presents an extrapolation formula that considers the move acceleration of typhoon centre. If the central positions of the forecasted typhoon at present, 6 hou- rs ago and 12 hours ago are known, based on this formula, the forecast positions of the typhoon centre in 12 hours' and 24 hours'time can be obtained. The tested results reve- aled that this formula has a good result for foreeasting little-probability typhoon track.

本文提出一个考虑到台风中心移动加速度的外推公式。在已知台风中心的现在位置、6小时前位置和12小时前位置的条件下。可根据该公式求得台风中心未来12小时及24小时的预报位置。验证结果表明,该公式对小概率台风路径有较好的预报效果。

 
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