自形的

When F is an algebraically closed field char F≠2, A is similar over F to an orthogonal matrix if and only if ( 1 ) the invariant factors of A aer self-reciprocal (2) the elementary divi sors of A of the form x...

ii当F为一个代数闭域且char≠2时，F相似于一个正交矩阵的充要条件为(1)A的不变因子是自反的。(2)A的形为(X±1)~(2k)的初等因子出现偶数次。

The method that combines the effective - field renormalization group with the discretized path - integral representation is extenged to study phase transition of the transverse Ising model in a quantum - spin system on the plane triangular lattice.

将离散路径积分表示下的有效场重整化群技巧推广应用于平面三角晶格上量子自旋横向Ising模型的相变研究，在这个方法中，注意区分了两种具有相同配位数而不同几何构形的晶体，并且考虑了起伏的影响，在二阶累积量近似下，得到了接近于精确解的临界值。

Based on lots of indoor observation, tests and analyses by 4 wells in the two areas, it is discovered that authigenic quartz in sandstone can be divided into three kinds:narrow,width and fine crystal. Species and composition of sandstone are the main factors which controled the formation of authigenic quartz.

对周口和通许两地区4口井砂岩的薄片观察、多种测试、分析，发现砂岩中石英的增生可分窄边型、宽边型和自形边型3种，增生石英的发育情况与砂岩的类型、成分等密切相关。

When the amount of hydrochloric acid added in hydrolysis process of aluminum ethoxide was relatively high, the formed AlCl〓 could enhance the self-pulverization of fibrillar γ-AlOOH powders during its dehydration process and lead to the formation of amorphous ultrafine alumina powders with the particle size of 3～5nm, which could melt and become glass like at 500℃, and then become spherical by crystallization.

当盐酸与乙醇铝的摩尔比从0.0增加到0.04时，粉末成球温度从1200℃降到500℃；在高酸量时形成的AlCl〓，能促进γ—AlOOH脱水时的自粉碎效应，生成无定形的超细Al〓O〓粉末，粒径为3~5nm，在500℃经熔化形成玻璃态，再晶化成球，而在其它情况下，粉末靠收缩经表面扩散方式成球。

The zircon grains separated from the syenogranite sample in the Chahayan pluton show generally euhedral form with fine oscillatory zoning on their CL images, and high Th/U ratios (0.32-1.12), which exhibit the features of magmatic zircons.

岩体中锆石呈自形晶，发育细微振荡生长环带，显示高的Th/U值(0.32~1.12)，表明锆石的岩浆成因。

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 "bowl term originated from the Rose Bowl Game, which was in turn named for the bowl-shaped stadium in which it is played.

&的&碗一词源自玫瑰杯比赛，这是又命名为碗形的体育场中，它是发挥。

Head back into the custom shapes libary and select the heart shape,draw out your heart shape in the middle of you sh制作网页的导航图标eild,fill with any color then add these layer styles.

返回到自定义形状库，并选择心形状，调整好大小把心形图层放在中间，填充你喜欢的颜色然后添加混合选项

The leaves of a giant lobelia plant, photographed on Mount Kilimanjaro's Shira Plateau in Tanzania, spiral around the center.

意译：植物在自然界的模式。这些叶片来自巨大的山梗莱属植物，叶片呈螺旋形围绕其中心。照片拍自坦桑尼亚的乞力马扎罗山的高原。

Resealed range analysis method is one of the good tools for studying fractal Brownian motion of time-series data and natural phenomena self-affine fractal, being applied widely for all time-series. In this paper, this method is used to analyze absolute geomagnetic Z component observations at Tianshui Observatory.

重标极差分析法(R/S， rescaled range analysis method)，是研究分数布朗运动及自然现象的自仿射分形的有力工具之一，对于所有时间序列分析都有着广泛的用途。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。