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concentric     
相关语句
  同心
     15 showed crossing double-ring (27.8%), 18 were inscribed solid ring (33.3%), and 5were concentric double ring (9.3%).
     CT见十二指肠降部有相交双环表现15例(27.8%),内切实心圆表现18例(33.3%),同心双环表现5例(9.3%)。
短句来源
     Application of Concentric Counter-tangential Combustion System in 400t/h Pulverized Coal-fired Boilers
     同心反切燃烧系统在400t/h煤粉炉上的应用
短句来源
     The designed quartz concentric torch and the gaseous transfer system are suitable for both argon ICP discharge and the molecular gases ICP discharges.
     所设计的气路转换系统和同心石英等离子体炬管等,使扫描式分子气体ICP光谱仪既可用于分子气体ICP放电,又可用于氩ICP放电。
短句来源
     By using aircraft sounding data(1949—1985)of 83 typhoons,the evolutionof the double-ring cloud wall of concentric eye typhoons are analysed.
     本文利用飞机探测资料,分析了台风同心双环云墙演变的特征。 在1949—1985年的83个同心双眼台风中,双环云墙的演变可分为以下三类。
短句来源
     Concentric Mosaics is an important image based rendering method.
     同心拼图 (Concentric Mosaics,CM)是一种重要的基于图像的绘制方法 .
短句来源
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  向心性
     The plasma concentration of ALD in normal left ventricular configuration,concentric remodeling,concentric hypertrophy and eccentric hypertrophy patients were ( 416.9 ± 127.36 ) pmol/L,( 379.2 ± 117.9 ) pmol/L,( 418.7 ± 129.47 ) pmol/L and ( 457.1 ± 134.29 ) pmol/L respectively.
     正常左室构型、向心性重构、向心性肥厚、离心性肥厚患者血浆ALD浓度分别为(416.9±127.36)pmol/L、(379.2±117.9)pmol/L、(418.7±129.47)pmol/L和(457.1±134.29)pmol/L。
短句来源
     In concentric remodeling pattern,Em and Em/Am values of FH+ group were (7.95±0.08)cm/s and( 0.72±0.04) respectively,while those of FH- group were (8.77±0.58)cm/s and (0.80±0.08).
     其中有家族史向心性重构型Em、Em/Am分别为(7.95±0.08)cm/s和(0.72±0.04),无家族史组为(8.77±0.58)cm/s和(0.80±0.08)。
短句来源
     There were no significant difference in PWV between patients with left ventricular concentric remodeling and without left ventricular concentric remodeling (11 10± 2 31 m/s vs 10 99±1 99, P = 0 681 6).
     左室发生向心性重塑者与未发生重塑者相比PWV差异无显著性 [(11 10± 2 310 )m/s:(10 99± 1 99)m/s ,P =0 6 816 ]。
短句来源
     In concentric left ventricular hypertrophy pattern,the values of FH+ group were (6.65±1.73)cm/s and 0.60±0.12 vs (7.80±2.30)cm/s and 0.70±0.10 of FH-group.
     有家族史向心性肥厚型Em、Em/Am分别为(6.65±1.73)cm/s和(0.60±0.12),无家族史组向心性肥厚型为(7.80±2.30)cm/s和(0.70±0.10)。
短句来源
     ②Total area of vessel at constrictive place of concentric plaque had significant difference with the total area of reference vessel (72.67 ±22.18),(63.69±14.72) mm2,P < 0.05, which showed significant positive reconstitution of vessel, while vessel reconstitution of eccentric plaque was insignificant (P > 0.05).
     ②向心性斑块狭窄处血管总面积与参考血管总面积比较差异显著眼(72.67±22.18),(63.69±14.72)mm2,P<0.05演,可见明显的血管正性重构,而偏心性斑块血管重构不明显(P>0.05)。
短句来源
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  同心的
     The resonance theorem for a family of α convex functionals on a β normed space is generalized. The condition “concentric balls” in the theorem is dropped to the balls which may be with different centres.
     推广了赋β-范空间上α-凸泛函族的共鸣定理,将其中的“同心球”条件降低为一族不必同心的球。
短句来源
     The pupil and the iris are approximately concentric circles, it can search the outer boundary of the iris in less range with the circular template and oriente the center and the radius of the iris.
     然后根据瞳孔和虹膜近似同心的特性,利用圆形检测算子在小范围内搜索虹膜的外边沿,确定虹膜的圆心、半径。
短句来源
     Rotavirus, the main cause of severe dehydrating diarrhea in infants and children, is non-enveloped and formed of genomes of double-stranded RNA enclosed by three concentric layers of protein.
     轮状病毒(Rotavirus,RV)是引起婴幼儿腹泻死亡的主要病原体之一,是一种没有外膜的RNA病毒,由3层同心的蛋白质衣壳包被双链RNA基因组构成。
短句来源
     In addition,many concentric C rich layers formed within SiC. Above changes in microstructure can improve fiber's strength from 2800 MPa to 3600 MPa.
     同时还能够有效地抑制W芯附近SiC晶粒的长大,并在SiC中形成许多同心的富C层.这些微结构上的变化可使SiC纤维强度从2800 MPa提高到3600 MPa.
短句来源
  同心圆
     On the array there were three concentric circles in which radius and line densities were 5,10,16.8 cm and 0.127,0.191,0.341 cm~(-1),respectively. The height of heating-head was 10.2 cm.
     卤钨灯分布在三个半径分别为5,10,16.8 cm的同心圆上,线密度分别为0.127,0.191,0.341cm-1,加热头高度为10.2 cm.
短句来源
     3. the concentric circle theory by Russian educationist 巴班斯基;
     3、俄罗斯教育学者巴班斯基的同心圆理论。
短句来源
     With the“concentric circles” structure specimen,the effects of additives of SiO_2and Al_2O_3 on the sintering and grain growth of PTC BaTiO_3 were investigated. Theexperimental results show that the ceramics exhibit liquid phase sintering characteri-stics.
     本文采用“同心圆”式试样,观察 SiO_2、Al_2O_3等添加物对 PTC BaTiO_3陶瓷的物质传递及晶粒生长的影响,实验结果证实了添加 SiO_2、Al_2O_3等的 PTC BaTiO_3陶瓷,呈现出液相烧结的特征。
短句来源
     Results The characteristic concentric structure of the disease was well displayed in 2 cases on both T 1WI and T 2WI, being consistent with pathological results.
     结果  2例T1WI和T2 WI均较好地显示出本病的同心圆结构特征 ,与病理表现相吻合。
短句来源
     (3)When superposition of P300 topographies of the 2 groups, P300 of normal children showed concentric circle diffusion and both sides symmetry, while the ADHD children did potential deflection.
     (3)两组P300脑电地形图叠加后,正常儿童组P300呈同心圆状扩散,左右对称,而注意缺陷多动障碍儿童组电位偏移。
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      concentric
    The analytical solutions for coaxial cylindrical and concentric spherical cavities are obtained, in particular, for a straight circular cylinder and a sphere.
          
    The method of calculating the radial component of the stress tensor in a film, connected with concentric circular conductors with current, is obtained.
          
    We consider in the nonlinear formulation the steady-state motion of an incompressible viscous fluid between two concentric spheres, into the gap between which fluid enters through one hole and leaves through a second.
          
    This flow is an analog of the point vortex flow and has concentric circles as streamlines, and a unique dependence of the velocity vector on the Cartesian coordinates is provided everywhere.
          
    All the equation coefficients have been calculated for a cavity in the form of a circular cylinder or two concentric cylinders.
          
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    Computation of vertical stress in soil beneath loaded area is greatly simplified by influence chart, which was proposed by N. M. Newmark in 1942.The main purpose of this paper is to present a method to modify the Newmark's chart. Instead of the concentric circles in the original chart, concentric squares are used. The latter is more convenient to estimate number of blocks. Further, a so-called "influence value curve" is introduced to avoid different tracings for different depths at which stress is...

    Computation of vertical stress in soil beneath loaded area is greatly simplified by influence chart, which was proposed by N. M. Newmark in 1942.The main purpose of this paper is to present a method to modify the Newmark's chart. Instead of the concentric circles in the original chart, concentric squares are used. The latter is more convenient to estimate number of blocks. Further, a so-called "influence value curve" is introduced to avoid different tracings for different depths at which stress is computed.The influence chart with concentric squares for computing vertical deformation in subgrade soil is also discussed.

    推算地基土壤由於建築物重量所引起的應力和變形,是估計建築物沉陷的必經步驟。利用感應圖的計塊法來推求應力和變形,紐馬克教授曾先後於1942年和1947年發表。這種方法,特別是以感應圖求土壤中的垂直應力,當遇到不規則形的建築物基礎時,或研究各基脚相互間的應力影響時,工程界採用的很多。本文主要內容是對感應圖圖解法提出下面四點改進的方法,以便利地基和基礎的設計工作:一.原方法的應力感應圖由若干同心圆形圈所組成,本文改用許多同心正方形,使估計不成整塊的塊數時,比較準確。二.筆者製成“感應值曲線”。當需要計算不同深度處的垂直應力,基礎平面圖祇需根據其中某一深度為比例尺繪製,其他深度處的垂直應力,可根據感應值曲線求得。這樣,避免原方法中每個深度耍繪不同的基礎平面圖以及每次計點塊數的麻煩。三.當地基土壤屬於不允許横向膨脹狀態,本文根據e-p曲線所得的壓縮公式,製成多條曲線,以便利計算。四.當地基土壤可假定屬於彈性狀態時,筆者製成正方形的變形感應圖,以便利彈性地基上具有不規則形基礎的建築物的沉陷計算。

    According to the basic equations derived under the two assumptions by Harold Lauffer—(1) the energy head of every point of a vertical section remains constant,(2) the flow lines are concentric circular arcs,this paper qives a comprehensive deduction of curvature effect in the characteristics of free overflow of round-crested spillway.118 runs of experiments of three round-crested spillway models of different size have been conducted by the author.The experimental results check the derived equations basically.Some...

    According to the basic equations derived under the two assumptions by Harold Lauffer—(1) the energy head of every point of a vertical section remains constant,(2) the flow lines are concentric circular arcs,this paper qives a comprehensive deduction of curvature effect in the characteristics of free overflow of round-crested spillway.118 runs of experiments of three round-crested spillway models of different size have been conducted by the author.The experimental results check the derived equations basically.Some empirical equations have been prepared to facilitate the application of experimental data.The discharge coefficients of free overflow of 27 different profiles of 16 practical spillways obtained by model tests have also been collected to verify the curvature effect equatiohs given by this paper Their practical agreement is also acquired.

    本文根据劳弗尔(H.Lauffer)氏在两项假定[(1)垂直测线上各点所含能量为常数,(2)流线呈同心圆弧]下所导得的基本公式,作了详细的补充引伸,得出圆顶壩自由溢流时各项水力特性中的曲率影响计算公式。作者曾进行了大、中、小三个圆顶壩模型的试验共118组,试验成果基本上和导得的计算公式相合致。文中并根据试验资料制定了一些经验公式,应用时可更简便。此外,也曾搜集了16个实用溢流壩包括27种断面曲线形式的流量系数模型试验资料,来验证流量系数所受的曲率影响,基本上也相符合。

    We have calculated the slowing-down densities of neutrons in two adjacent media of different slowing-down properties according to the age theory. The outer medium is extended to infinity. The inner medium consists of a sphere of radius a, and contains a monoenergetic fast neutron-source in the form of a concentric spherical shell of radius R.

    本文根据年龄理论,考虑下列问题:二介质由球面γ_=a分开,球面外的介质一直延伸到无限,球面内的介质中在γ_=R处放有壳形单能快中子源;要求二介质中由此引起的中子慢化密度的空间分布。 求解时应用了拉氏变换的方法。求出了适用於(τ_1)~(1/2)α情形的展开式,这里τ_1是中子在球面内介质中的年龄、物理上出现的实际情形多半满足(τ_1)~(1/2)α的条件,这时展开式收敛很快。 对於二介质是重水和石墨的一个实例;我们算出了热能处中子慢化密度的数值结果(假定快中子源的能量为2兆电子伏),并和用通常二群近似方法求得的结果进行了比较。

     
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