层

However, as the belt layers 2 and 3 has very high rigidity, large shearing forces occur between the belt layers 2 and 3 and the crown protective layer 6 of the wave-form steel cords or wave-form filaments to cause separation therebetween.

但是，由于带2层和3具有很高的刚度，大剪切力之间发生的带2层及3官方防护6层的波浪形钢线或波浪形长丝造成分离therebetween 。

In this paper, nanopowders of rare earth oxides and tungsten were prepared and 0-3 type nano-composit rare earth tungsten thermionic emission materials were fabricated with novel technics. The raw material selection, preparation technic parameter, structure, physical and chemical characteristic, the rare earth distribution and the emission behavior were studied. The influence between the active layer and the thermionic emission performance, rare earth elements diffusion and distribution along depth were investigated in detail. The surplus RE formation and the electron transfer were discussed in theoretically. The thermionic emission current density of the single surplus RE on the active layer was educed. We adopted "liquid-liquid mixing, freeze-drying and two stage-reduction" working step firstly to produce the RE-W nanopowders including La-W powder, Ce-W powder and Y-W powder.

本文采用细化显微组织的新工艺，制备了纳米稀土钨粉末和0-3型纳米复合稀土钨热电子发射材料，探讨研究其原料选择、制备工艺及参数、结构特征、物理和化学特性、稀土分布均匀性、以及热电子发射特性；系统研究了稀土元素的高温扩散情况、高温状态下活性层中稀土的纵向深度分布、以及表面活性物质和活性层厚度对热发射性能的作用；从理论上分析阐释了超额稀土的形成及其电子的传递过程；并从理论上推导了活性层中单个超额稀土的热电子发射电流密度。

Storey 5 for the thermocline layer sitting north to south.

层高4层、5层为跃层、坐北向南。

Addressing to deficiencies of this method,optimum partition method which is widely used in mass analysis is developed to fit thermocline boundary calculation.

针对垂直梯度法的不足，引入水团分析中的最优分割法，对典型剖面，以及边界型、逆变型、多层型等几类特殊剖面的跃层边界分别进行了计算，并对垂直梯度法与垂直梯度法的计算结果进行了比较分析，结果表明最优分割法确定的跃层边界更为合理。

The cross-sectional size of the PBG cover is greatly reduced and its dimension is only 145 mm×145mm which is about 2/3 smaller than the cover designed by Thevenot et al.

该覆层结构还大大缩小了尺寸，其横截面尺寸只有145mm×145mm，该尺寸比Thevenot等人设计的覆层减小了约2/3，比Qiu等人设计的覆层减小了约6/7。

In this thesis, the heterojunction with intrinsic hydrogenated amorphous silicon thin layer ( heterojunction with intrinsic thin layer: HIT) solar cells are investigated. The solar cell structure of p/i/n are fabricated. The substrate is a typical 4-inch n-type wafer with (100) crystal orientation, 1~10 ohm-cm and about 525 μm thickness. The p and i a-Si:H layers are deposited by a 13.56 MHz plasma enhanced chemical vapor deposition. The i a-Si:H layers are especially deposited by pulse-wave modulation plasma technique with fixed plasma turn-off time toff = 10 ms and changed plasma turn-on time ton= 10 to 40 ms to selectively control the different silicon to hydrogen bonding configurations. The effect of various Si:H bonds on the performance of HIT solar cells are explored.

中文摘要本论文针对异质接面薄本质层(heterojunction with intrinsic thin layer： HIT)太阳电池进行研究，采用一般典型四英吋晶向为(100，厚度约为525 μm，电阻率约为 1~10 ohm-cmn型矽晶圆为基板，制作p/i/n太阳电池，p及i层薄膜以13.56 MHz电浆加强化学气相沈积，i层并采用脉波调变电浆技术，在固定电浆关闭时间toff = 10 ms及改变电浆开启时间由ton = 10 ms 至40 ms条件下制作具有不同矽氢键结微结构的氢化非晶矽薄膜以探讨不同矽氢键结对太阳电池性能的影响。

In the early days copper was normally followed by a relatively thin bright nickel layer with conventional chromium topcoat.

早期，涂覆铜层之后，再涂一薄层光亮镍，然后传统的铬层位于最外层。

Because the governing equations have the relationship of translation symmetry, the displacement fields and the electrical potential fields can be represented by Bloch theorem to get the periodical structural governing equations.

将应力和电位移场以位移和电位场表示，即可利用层与层间的位移、应力、电位和电位移必须连续等条件求得转换矩阵，再满足上下表面的边界条件即能求得出压电周期叠层板波传频谱。

Thick portions 212TH provided to non-formation regions of the transmissive layer 214 are formed to the colored layer.

在着色层上形成设置在透光层214的非形成区域上的厚层厚部分212TH。

Besides the application scope of single wall and double wall corrugated board, the triple wall product is mainly used as motorcycle packing material.

除了具有三层和五层瓦楞纸板的应用特性外，七层瓦楞纸板主要用于摩托车的包装。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。