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In the small land area, due to the terrain, the soil of two or more staggered pattern of distribution.

在不大的地域内,由于受中地形的影响,两种或两种以上的土壤交错分布的格局。

High order symplectic schemes of three-dimensional time-domain Maxwell's equations are constructed with symplectic integrator technique combined with high order staggered difference. The method is used to analyzing stability and numerical dispersion of high order time-domain methods and symplectic schemes with matrix analysis and tensor product.

利用辛积分技术与高阶交错差分技术,建立求解三维时域Maxwell方程的高阶辛算法;结合电磁场中的物理概念,借助矩阵分析和张量分析理论,获得高阶时域方法及高阶辛算法的稳定性和数值色散性的统一处理新方法。

By using constructive methods and complicated techniques of matrices, necessary and sufficient conditions for the existence of selfconjugate solution, perselfconjugate solution, centrosymmetric solution, bisymmetric solution, skewselfconjugate solution, skewperselfconjugate solution, skewcentrosymmetric solution, skewbisymmetric solution and various interlaced solutions over a finite central algebra Ω to systems of generalized Sylvester matrix equations overΩ are presented.

利用构造方法和复杂的矩阵技巧,研究了有限维中心代数上的多项式环Ω上的广义Sylvester矩阵方程组在Ω上有自共轭解,斜自共轭解,广自共轭解,斜广自共轭解,中心对称解,斜中心对称解,双对称解,斜双对称解及其各种交错解的充要条件。

There were only 94 vascular plant species, belonging to 50 family and 75 genera. The dominant species in the communities were deciduous broadleaf species Liquidambar formosana, Robinia pseudoacacia, Ailanthus altissima, Acer buergerianum, and Celtis sinensis, evergreen broadleaf species Cinnamomum camphora and Elaeocarpus glabripetalus, and Phyllostachys heterocycla. Robinia pseudoacacia+Cinnamomum camphora community had the highest Shannon-Wiener index (1757) and Phyllostachys heterocycla+Acer buergerianum community had the highest Simpson index (0163), but no consistency was observed between the curves of H and D. For vertical structure, most communities had no significant understory stratification.

结果表明:辰山植物区系以泛热带和北温带占优势,具有典型亚热带和温带成分交汇和南北植物分布交错特征;但保育区内种类单一,维管束植物仅有49科69属94种;主要群落是以枫香、刺槐、臭椿、三角枫和朴树等为优势树种的落叶阔叶林,以香樟和秃瓣杜英等为优势树种的常绿阔叶林,以及毛竹林;物种多样性普遍较低,Shannon-Wiener多样性指数最高为刺槐+香樟群落(1.757),Simpson均匀度指数最高值为毛竹+三角枫群落(0.163);多样性指数曲线和均匀度指数曲线不具有一致性的变化趋势;多数群落垂直结构中无明显林下分层现象;演替前期的落叶乔木种群后续个体不足。

From the analysis and discussion of features and significance ofcultivation in the arid winddrift sand areas as well as some currentproblems in the middle part of Ningxia, it can be seen that althoughthe environmental conditions in these areas are poorer for engaging incultivation, cultivation still has an important place in the national eco-nomy, and also plays a decisive role in the stabilization of the liveli-hood of the people, and yet the current problems of cultivation areserious as well.

笔者认为,在我国广大旱作低产区,尤其是农牧交错地区,虽然环境条件有差异,但也都不同程度地存在着类似宁夏中部地区的问题,对于这些问题,期望引起国家有关主管部门的重视,并把这类地区种植业的科学研究纳入我国农业科学研究的轨道。

While many critics of Chaucer's early poem The House of Fame have put a premium on problems of language and textuality and others have called attention to a predominance of images and sight, they have generally failed to address the crucial convergence of the textual and the visual.

在关於乔瑟早期诗作《名人堂》的讨论中,许多学者强调此部诗作著重处理语言与文本性的问题,而另一方面也有诸多论者指出视觉与图像的重要性;然而却少有研究进一步思考视觉与文本两者间交错关联所引生的意义。

No brittle edge to upper registers when played with autho-rity no-r does the same register played delicately collapse into a tinkly toy piano like quality that red book could almost be counted on to sound like years ago (and even today with lesser DAC designs), the piano's woody tone is in co-rrect balance with that almost bell like clarity unique to the instrument's harmonic complexities.

高频不尖锐,在放一些著作时,优美地表达了钢琴的质量,而不是将钢琴表达成玩具琴(尽管今天有较少的DAC 设计),钢琴的木音质平衡得恰到好处,乐器的融洽交错,清晰明了。

All withsave the river, that marked its courseby a winding black line across the landscape; and the leafless trees, that against the leaden sky now revealed more fully the wonderful beauty and intricacies of their branches.

在一片白茫茫之中,只有河流在美丽的画面上划出一道曲曲弯弯的黑线;还有那叶儿落净的树木,映衬着铅灰色的天空,此刻更显得枝丫交错,姿态万千。

The dark cedars on either side of the graveled drive met in an arch overhead, turning the long avenue into a dim tunnel.

沿着碎石的车道两边,茂密的柏树枝叶交错,形成天然的拱顶,使那长长的林荫路变成了一条阴暗的甬道。

Here the architects have stacked a series of irregular boxes, 145 separate and unique apartments – each a response to what is going on inside – and formed and jiggled them into an extraordinary tower.

但是在这里,建筑师将一系列不规则的盒子——145间彼此独立、独一无二的公寓,每一间公寓都是对其内部空间的回应——叠加起来,交错组成了一座独特的大楼。

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I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援,我们正徵召国家所有各种的力量:我们的外交及发展,我们的经济力量与道德劝说,所以你们与其他军人不须要孤独地负起国家安全的责任。

Imagine yourself to be an actor in a play on the stage.

设想你自己是一个演员在舞台上表演。