查询词典 symmetric

As an improvement of the conventional 1-way bypass graft for stenosed arteries, a new geometric configuration with symmetric 2-way bypass grafts is presented.

作为对传统单路动脉移植管旁通术的改进，提出了一种新的双路对称移植管旁通术的几何构型。

Stipular spines erect, 4-17 mm, 2 per node; petiole 5-9 mm, pubescent; leaf blade broadly ovate or ovate-elliptic, 3-5.5(-7)× 2.2-5 cm, papery, abaxially yellowish to brownish pubescent on major veins, adaxially mostly glabrous, distinctly 3-veined from base, base broadly cuneate, cuneate, or subrounded, symmetric to slightly oblique, margin obtusely serrate or serrulate, rarely subentire, apex obtuse, rounded, or slightly retuse. Flowers in axillary cymes.

托叶刺竖立，4-17毫米，每节点2；叶柄5-9毫米，短柔毛；叶片宽卵形的或卵状椭圆形， 3-5.5(-7)* 2.2-5 厘米，纸质，背面淡黄到带褐色短柔毛在主脉上，正面多数无毛，清楚3脉的自基部，基部宽楔形，楔形，或近圆形，对称到稍偏斜，花生于腋生聚伞花序。

The scale-type geometric wear-resistant structure surface is characterized in being made up of a base and the bionic geometric units on the surface. The bionic geometric structure unit is a scale-type structure distributed regularly on the surface of the base, and the distribution density is that: the ratio between the geometric projection area of the scale-type structure on the base surface and the surface area of the base formed by all the edge ends is 50-100%; the scale-type geometric structure unit has a symmetric hexagon shape on the surface; the sides L2/L1=1.0-2.0, L1: 1mm-50mm, and the internal angle Alpha is 120 degree -130 degree, the internal angle Beta is 100 degree -110 degree; the A-A section is subtriangular, and the B-B section is a trapezoid, the height H of the scale-type is 1-5mm.

本发明由基体和其表面上的仿生几何结构单元组成，仿生几何结构单元为在基体表面规律分布的鳞片型结构，鳞片型的分布密度为：其在基体表面上的几何投影面积之和与所有棱端围成的基体表面积之比为50-100％，鳞片型几何结构单元的表面形状为对称六边形结构：边长L2/L1＝1.0-2.0，L1：1mm-50mm，内角α为120°-130°，内角β为100°-110°，鳞片型的A-A截面为近似三角形，B-B截面为梯形，鳞片型的高度H为1-5mm。

It was demonstrated that the sulphonated phase could be used to prepare columns for the separation of alkaline drugs, symmetric peaks were obtained for them and base-line separation was realized.

在磺酸型的固定相上，则成功地分离了一些碱性药物，得到了较好的对称峰型，这些药物间可达到基线分离。

It is shown that even for the case of vanishing IMF strength the bow shock is not rotationally symmetric with respect to the Sun-Earth line: the east-west dimension of the cross section of the bow shock exceeds the north-south dimension by about 9~11% on the terminator plane (dawn-dusk meridian plane) and its sunward side, and becomes smaller than the north-south dimension by about 8% on the tailward side of the terminator plane.

模拟结果表明，即便对于IMF强度为零的情况，弓激波相对日地连线也不具备旋转对称性质：终端面及其向阳侧的弓激波截线的东西宽度大于南北宽度（约9%~11％），终端面尾侧的弓激波截线东西宽度小于南北宽度（约8％）。

The tetrasyllabic words have close connection with the language system, and especially the symmetric mechanism and the analogical mechanism is decisive for its origination and development.

四音格现象的存在与语言自身的机制有着密切关系，特别是类推机制、对称机制与四音格词的产生和发展关系更为密切。

Vein of Galen thrombosis have a special CT and MR appearance,that is symmetric hypodense areas or long-T1 and long-T2 signal of bilaleral thalami,internal capsules and basal ganglias.Thrombus and its changing maybe directly observed on CT and MRI.

Galen静脉血栓有特征性的CT及MR表现，即双丘脑、双内囊及双基底节区对称性低密度影和长T1、长T2异常信号，CT和MR可直接观察栓子及其变化。

Results MRI showed symmetric abnormal signals in basal ganglia in 27 patients, in thalami and dentate nucleus in 21 patients, and in corona radiata-centrum ovale in 9 patients. All the lesions were hyperintensity on T1WI. Local hypointensity in basal ganglia was found in 4 patients, while hyperintensity or slight hyperintensity on both T2WI and T2-FLAIR were found in 26 patients, and slight hyperintensity with hypointensity on both T2WI and T2-FLAIR in 1 patient.

结果 27例颅脑MRI表现为双侧基底节区片状对称性异常信号，21例双侧丘脑、齿状核片状异常信号，9例双侧放射冠－半卵圆中心见片状对称性异常信号；27例T1WI上见高信号区，其中4例基底节区病灶内见小片状低信号；26例T2WI及T2-FLAIR见高或稍高信号，1例见稍高、低混杂信号。

MRI of IHP has some features. Symmetric high signals on both T1WI and T2WI in basal ganglia, thalami and dentate nucleus have important diagnostic value for IHP.

特发性甲状旁腺功能减退症的颅脑MRI表现具有一定特征性，双侧基底节区、丘脑及齿状核对称短T1稍长T2异常信号具有很高的诊断价值。

The number and intensity of peaks of the thermoluminescent cutves are obviously related to stages of gold mineralization:the curve of the early barren quartz shows nearly Symmetric pattern; that of the major stage auriferous quartz is of multimodal type; the curve of the late quartz, low in gold, is marked by unimodal--bimodal type with rather intense luminescence.

石英热发光曲线的发光峰的数量和强度与金成矿阶段有着明显的关系：早期成矿阶段结晶的基本不含金石英，热发光曲线常为近对称的单峰型，发光强度较大；主成矿阶段形成的含金石英，热发光曲线为多峰型，常具最大的发光强度；晚期成矿阶段生成的含金性较差的右英，热发光曲线呈单峰-双峰型，发光强度亦较大。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。