查询词典 skew-symmetric

Numerical algebra ; matrix ; equation ; symmetric positive semidefinite solution

数值代数；矩阵；方程；对称半正定解

As a corollary ,we prove the nonexistance of cubic semisymmetric graph of order 12p,i.e.,for all edge-transitive cubic graph of 12p is symmetric.

本文通过对12p阶3度边传递图的全自同构群的研究，证明了12p阶3度半对称图不存在，即任意12p阶边传递图必为对称图。

The solution of symmetric cold forge problem was compared with a sonable results have been obtained.

计算结果与有限元法比较接近，说明配点型无网格法用于金属塑性大变形过程数值模拟是可行性的。

Leaves glossy deep green adaxially, narrowly linear-lanceolate, straight or slightly falcate, 0.8-6.5(-7) cm × 1.5-5 mm, midvein green abaxially, 0.3-1.2 mm wide, flat with median longitudinal keel throughout, stomatal bands present on both surfaces, bands on adaxial surface 0.5-1.5 mm wide, of 7-28 rows of stomatal, white powdery or not, bands on abaxial surface 1.2-2.8 mm apart, 0.3-0.8(-1) mm from leaf margin, not or rarely white powdery, base decurrent, margin denticulate, sometimes indistinctly so, especially on old trees, with 18-55(-90) teeth per side, apex usually symmetric and spinescent, spine 0.3-2 mm. Pollen cone fascicles terminal, 1-3(-5) together, broadly obovoid, each of 8-20 cones, occasionally a few also around base of seed cone; peduncle 2-4 mm; cones narrowly oblong-conical.

正面的叶有光泽的深绿色，披针形狭线形，直的或稍镰刀形， 0.8-6.5(-7)厘米×1.5-5毫米，中脉绿色背面，全部的0.3-1.2毫米宽，平的具中间的纵向的脊，气孔带宿存在两面，在正面0.5-1.5毫米宽上条纹状，7-28排stomatal的，与否白色粉状，相隔1.2-2.8毫米的条纹状的在背面，从叶缘的0.3-0.8(-1)毫米，白色敷粉的或很少的不，基部下延，边缘具小齿，有时不清楚如此，特别是在古树上，具18-55(-90)齿每边，先端通常对称和具刺，刺0.3个-2毫米雄球花束簇终端，花序梗2-4毫米；圆锥形孢子叶球狭长圆形。

Results All cases showed a bilateral symmetric changes in the posterior periventrieular white matter,MRI signals were longish T_1 on T_1WI and hyperintensity on FLAIR,which appears as butterfly with splenium of corpus callosum infiltration.

结果：MR扫描7例均显示双侧脑室三角区周围白质内对称分布的异常信号，主要位于枕、顶、颞叶，胼胝体体部、压部，T1WI呈稍长T1信号，FLAIR像示高信号，呈典型的&蝶翼状&，1例于视放射区呈对称性的长T2信号。

The mixing of top squark was renoralized with a symmetric formulae.

顶夸克超对称伴之间的混合也需要做重整化，文中经一形式对称的公式完成该步骤。

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。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。