无结构

B-ISDN supports switched, semipermanent and permanent point-to-point and point-tomultipoint connections and provides on demand, reserved and permanent services. Connections in B-ISDN support both circuit mode and packet mode services of a monoand/or multi-media type and of connectionless or connection-oriented nature and in a bidirectional or unidirectional configuration.

B-ISDN支持可交换的、非永久性的以及永久性的点对点和一点对多点连接，同时提供按需的、预留的和永久的服务。B-ISDN内的连接支持单个和/或多个媒体类型电路模式和分组模式服务，以及无连接或面向连接性的电路模式和分组模式服务，并且采用双向或单向结构。

It is also necessary in the growth, alignment and septation of the cardiac out flow tract. TBX1 is regulated by a series of upstream genes, and it also regulates a series of downstream genes.

最近通过突变分析发现在小鼠和斑马鱼体内的TBX1纯合子无义突变可导致类似22q11·2DS的咽弓和其相关结构缺陷为特征的表型。

Foam insulation put on the hard concrete of the concrete jacket and shell structures to achieve the same with the purpose of life. At the same time, the wall surface with the decorative layer is to provide the same solid concrete foundation, decorative materials and the grass-roots level so that the thermal expansion material cold reduced the value of equal strength, thus ensuring the durability and the lack of maintenance of the quality. There is three-in-one insulation which is light body, set-load-bearing and warm kept at the same time.

把保温泡沫混凝土穿上坚硬的混凝土外衣与壳体达到了与建筑结构同寿命的目的，同时给墙体表面与装饰层提供了同样坚硬的混凝土基础，使饰面材料与基层材料的热胀冷缩值、强度基本相等，从而保证了耐久及无维修的质量，同时集承重、轻体、自保温三项功能于一身。

How to arrange the brace appropriately and adopt the corresponding form of brace when the other conditions are limited has not been studied and the design method is not available so that it may effect the rigidity and sideway of the structure.

如何在其他条件受到限制的情况下合理的布置支撑，并选取支撑的形式，目前暂无相应的设计计算方法，故而影响到结构的刚度和侧移量。

However, the Mn content did not exhibit the same tendency as Fe did but showed the lowest value in the middle part of the silk gland.

Fe能够诱导丝蛋白的构象由无规线团和/或螺旋结构向β-折叠转变，但是Mn对丝蛋白的构象没有明显的影响。

The system has not only similar function to the traditional ACDCAC variable frequency system, but also compact structure, small volume and light weight. It can shape the input current into sinusoidal wave, with no harmonic pollution to grid.

其功能类似于传统的变频调速系统，而其结构紧凑，体积小，重量轻，并且输入电流为正弦波，对电网无谐波污染。

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

Our results show that there were no significant difference in insect species and abundance between the massion pine forest and the slash pine forest.

通过对6种不同林分结构下的马尾松林和湿地松林内昆虫群落调查与多样性指数分析，表明2种松树内的昆虫种类和数量无显著差异，混交林中的昆虫群落的种类和数量比纯林多，尤其以捕食天敌类群的种类和数量更为明显。

When we modulate appropriate sodium salicylate concentration, the width of nano-stripes becomes 16nm.

同时，在含有菱形孔的云母片上，我们发现此双头双亲分子只在无孔地方有界面聚集，所形成的条带结构均平行于云母上菱形孔的一边。

Because the ore body of Xiaoguanzhuang Iron Mine is soft and broken, which is one of the most difficult deposits to exploit.

实践证明小官庄铁矿无底柱分段崩落法应用大结构参数是可行的。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。