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In order to reduce the difference of stress level of sabot dedendum surface remarkably and the stress of dangerous dedendum surface greatly, interval meshing technology was applied to the composite sabot of high power armor piercing projectiles.

为有效地降低复合材料弹托发射过程中齿根面应力水平的差异,将啮合间隙技术应用于大威力穿甲弹的复合材料弹托上,给出了间隙啮合技术应用的一般步骤和方法。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法,制备出了孔径在20-150nm之间可调和具有不同孔结构(如Y形、树枝状、锯齿状)的系列多孔氧化铝模板,在此基础上,利用电化学沉积、气相催化生长和化学控制腐蚀等方法,成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系,探索了基于模板孔壁内沿生长一维结纳米材料的机制,较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能,为低维纳米材料器件化提供了实验基础。

It is shown by test results that the loop antenna can eradiate effectively. And it is little- volume, low- cost and high- efficiency.

试验表明,该设计使天线能够有效地将信号发射出去,并且具有体积小,功耗低和效率高等显著优点。

At a recent show he unveiled four new pets: a portable lightning machine that spits 9-foot bolts of crackling blue lightning at nearby machines; a 120-decibel whistle driven by a jet engine; a military rail gun that uses magnetic propulsion to fire a burning comet of molten iron at 200 miles per hour, which upon impact explodes into a fine drizzle of burning droplets; and an advanced tele-presence cannon, a human/machine symbiont that lets a goggled operator aim the gun by turning his head to gaze at the target. It fires beer cans stuffed with concrete and dynamite detonators.

最近的一次秀场上他推出了4只新宠物:一台便携式闪电机,对着近旁的机器武士喷吐出9英尺长劈啪作响的蓝色闪电;一只由喷气机引擎发动的120分贝汽笛;一门军用的电磁轨道炮,发射时速200英里的热熔铁疙瘩,彗星样的火球在空中爆裂开来,变成燃烧的毛毛细雨洒落下来;还有一门先进的远地视在[3]人机一体加农炮,戴着虚拟视镜的操控者转动自己的脑袋盯住目标就可调整炮口的瞄准方向,而炮弹是塞满雷管炸药和混凝土的啤酒罐。

At a recent show he unveiled four new pets: a portable lightning machine that spits 9-foot bolts of crackling blue lightning at nearby machines; a 120-decibel whistle driven by a jet engine; a military rail gun that uses magnetic propulsion to fire a burning comet of molten iron at 200 miles per hour, which upon impact explodes into a fine drizzle of burning droplets; and an advanced tele-presence cannon, a human/machine symbiont that lets a goggled operator aim the gun by turning his head to gaze at the target.

最近的一次秀场上他推出了4只新宠物:一台便携式闪电机,对着近旁的机器武士喷吐出9英尺长劈啪作响的蓝色闪电;一只由喷气机引擎发动的120分贝汽笛;一门电磁推进的列车炮,发射时速200英里的热熔铁疙瘩,彗星样的火球爆裂开变成燃烧的毛毛细雨洒落下来;还有一门先进的远地视在(译注2)人机一体加农炮,戴虚拟视频镜的操控者转动自己的脑袋就可调整炮口方向。

At a recent show he unveiled four new pets: a portable lightning machine that spits 9-foot bolts of crackling blue lightning at nearby machines; a 120-decibel whistle driven by a jet engine; a military rail gun that uses magnetic propulsion to fire a burning comet of molten iron at 200 miles per hour, which upon impact explodes into a fine drizzle of burning droplets; and an advanced tele-presence cannon, a human/machine symbiont that lets a goggled operator aim the gun by turning his head to gaze at the target. It fires beer cans stuffed with concrete and dynamite detonators.

最近的一次秀场上他推出了4只新宠物:一台便携式闪电机,对着近旁的机器武士喷吐出9英尺长劈啪作响的蓝色闪电;一只由喷气机引擎发动的120分贝汽笛;一门军用的电磁轨道炮,发射时速200英里的热熔铁疙瘩,彗星般的火球在空中爆裂开,变成燃烧的毛毛细雨洒落下来;还有一门先进的远地视在[3]人机一体加农炮,戴着虚拟视镜的操控者转动自己的脑袋盯住目标就可调整炮口的瞄准方向,而炮弹是塞满雷管炸药和混凝土的啤酒罐。

Mr Thompson's approach deals summarily with geology, Herdwick sheep, mining and the Celts and Norse-Irish who bequeathed many of the place names to the eight valleys that, according to Wordsworth's description, radiate "from the nave of a wheel", a nub of rock formed by volcanoes as powerful as Vesuvius.

汤普森概要地讲述了湖区的地质状况,湖区特有的赫德威克绵羊,采矿业,凯尔特人和古斯堪的纳维亚—爱尔兰人,以及他们遗留下来的八个河谷的名字,这些名字,华兹华斯描述道,&从轮子的中心发射出来&,像一块由维苏威那样强大的火山形成的溶岩石块。

The prepared PU was an elastic solid,which could dissolved in ethanol,and it exhibited strong deep purple fluorescence at the peak of 365 nm along with a shoulder at 386 nm as a thin film. Obviously,the prepared PU also was a kind of uncommon ultraviolet-emitting polymer materials.2.A novel water-soluble rod-coil block copolymer was designed and prepared successfully via the facile isocyanic acid polycondensation method using polyfluorene as rod segment and polyethylene glycol as coil segment in the main chain for the first time.

所制备的聚氨酯是一种弹性固体,可以溶解在乙醇中,同时又显示出具有半导体性质的荧光性能——最大荧光发射峰在365 nm并且在386 nm处有一个小的侧肩峰,可见它又是一种非常难得的紫外发光聚合物材料。2、首次采用了简单的异氰酸酯反应,成功地将聚芴作为刚性链段和聚乙二醇作为柔性链段,以嵌段方式连结到聚合物分子主链上,从而形成了一种新型的具有刚性链—柔性链结构的嵌段共聚物。

Each submarine was armed with eight launchers for the P-70 system. The Brest analog fire-control system had interfaces to the Legenda and Uspekh systems.

每艘艇装备了8个P70系统地发射器,由Brest模拟火控系统提供Legenda和Uspekh系统的界面。

XRD showed hexagonal wurtzite structure. Room-temperature PL spectra of perfectly overcoated CdSe/ZnS only showed a narrow band edge emission. Emission peak was great red-shifted relative to absorption and the shift increases as the size decreases. The size-dependence of shift could be explained very well in terms of excition fine-structure model and stress at interface owing to lattice mismatch contributes to the shift between CdSe and CdSe/ZnS with the same size.

结果显示表面修饰完善的样品的荧光光谱只有一个窄而强的带边发射;所有样品的荧光峰相对于1S-1S吸收峰有较大的红移,并且移动量随尺寸的减小而增加,利用激子的精细结构模型很好地解释了红移量和尺寸的关系;核/壳结构的样品的吸收峰和荧光峰相对于同尺寸的单量子点也有红移现象,这是由于CdSe和ZnS的晶格失配在界面上产生压力造成的。

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Do you know, i need you to come back

你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。