对轴

The limited Value of specific A-weighted sound level in the present standard JB/ TQh341-84 promulgated by the Ministry, which is applied to determine the unaccuracy of noise characteristics for axial-flow ventilators has been discussed.

论证了现行JB/TQh341-84部颁标准中用比A声级限值来判定轴流通风机噪声特性的不准确性，并提出了A声级限值标准及对高压大流量轴流通风机应采取的降噪措施。

When the undrawn films were annealed atthose temperatures, the morphologies in the lamellar crystals had change. WAXDand iR studies shown that the crystallinities incrcand, dimensions in (002) and(020) normals increased while that in (200) fold had slight decreases. The rela-tionship between the orientation of the drawn UHMWPE gel-films and the struc-ture changes and the optimum drawing temperature had been disscussed.

通过IR及X－ray衍射等方法研究发现，拉伸前用不同温度退火处理后，凝胶膜的片晶微结构产生明显变化，在对应于超高拉伸温度范围内，其结晶度增加，微晶的c和b轴方向尺寸变大，而a轴方向的尺寸减小，从理论上对这一变化过程作了考察，并讨论了超高拉伸取向性与这些结构变化的关系以及可超拉伸取向性的最佳温度范围。

By mean tests of microstructure test under uniaxial compression, the image sequences of red sandstones' microstructure were continuously gathered and the quantitative parameters were extracted; then the microstructural evolvement of red sandstones under uniaxal compression has been analyzed.

通过单轴压缩微细结构试验，采集红砂岩的微细结构图像系列，提取微细结构量化参数，对不同风化程度红砂岩在单轴压缩条件下微细结构的演化规律进行分析。

The propagation of elegant cosh-squared-Gaussian beams has been investigated and the analytic solutions have been obtained by means of an angular spectrum technique in uniaxially anisotropic crystals.

基于光束在单轴晶体中传输的角谱理论，对复宗量双曲余弦平方-高斯光束在单轴各向异性晶体中的传输作了研究，得到了一般的解析传输公式，并用数值的方法讨论了晶体内源于复宗量双曲余弦平方-高斯光束的两偏振分量的传输特性，结果表明，在适当参数的条件下，两偏振分量在晶体中的传输波形结构基本保持不变。

The experiments o f dynamic rock resistivity change are done with uniaxially compression, low confi ning pressure and shear.

采用单轴压缩、低围压三轴压缩和剪切3种加载方式，对标本进行动态电阻率变化实验。

AbstractAIM: To study the changes of refractive status and axial length in chicken form deprivation myopia and its recovery model, to observe the metamorphism of posterior sclera and to lay foundation for investigation of axial myopia pathogenesisMETHODS: Twenty-five newly incubated chicken were selected. Their left eyes were covered with semi-translucent membrane to deprive form perception for 14 days (form-deprivation group), or covered for 11 days followed by uncovered for 3 days. Unoccluded eyes in either group served as control eyes respectively. Retinoscopy and A- ultrasound were conducted to collect the refraction and axial length data.

目的：研究雏鸡形觉剥夺性近视眼及形觉剥夺性近视眼恢复模型的屈光状态和眼轴长度的变化，并观察后极部巩膜的形态学改变，为探讨轴性近视的发病机制打下基矗方法：选用新孵出的普通肉食家鸡25只，采用半透明薄膜眼罩遮盖的方法对左眼进行形觉剥夺14d或遮盖11d后，去遮盖3d。

Patent, and then the blade-to-blade flow was computed by solving the two-dimensional steady Navier-Stokes equations, finally, overall performance and internal flowfield characterization were obtained and analyzed.2. As to radial matching between blade sections, preliminary investigations were developed from three aspects such as stall margin customizing technique, control technology of tip clearance flow, prediction model and control technology of corner separate.a On basis of reviewing on methods of achieving the goal of stall margin in design process of fan and axial-flow compressor, in conjunction of understandings on "Sweep/Dihedral", stall margin customizing technique was put forward; two-dimensional performance prediction method for stall margin customizing was developed, it can consider influences of radial stacking patterns of blade sections and axial distances between blade rows conveniently and rapidly.b A simple model for tip leakage mixing loss of unshrouded blades for compressible flow was presented.

二、叶片基元展向匹配方面，本研究从影响负荷最大化的叶身展向积迭注：原(来源：ABC论文35网www.abclunwen.com指掠弯是裕度定制的一部分，为方便论述，本文将此统一论述为裕度定制、叶尖间隙、叶片与端壁角区这三个最重要因素出发，探讨了各因素影响负荷最大化的机理，并由此给出了最大负荷设计过程中的技术措施和努力方向。1从掌控风扇/轴流压气机裕度方法回顾入手，探析了美国和俄罗斯裕度控制方法及相应特点，结合对&掠/弯&因素的认识提出了裕度定制技术：并开发了能够体现裕度定制思想的二维特性预估方法，可在二维层面下方便快捷地考虑以掠/弯为代表的叶片基元展向积迭以及叶片排间轴向间距带来的影响；2借鉴Denton关于不可压叶尖泄漏损失的理论分析，推导出适用于可压缩流动的叶尖泄漏掺混损失计算的基本关系式。

In order to study the influence of the rigidity of unstiffened tubular joints on load-bearing behavior and structural stability,the experimental research on axial rigidity and bending rigidity of the joints was performed,in combination with the practical demands of a steel tubular constructional project.

试验结果表明，当支管与主管直径相差较多时，节点轴向刚度和抗弯刚度均较弱，节点的半刚性能对结构的受力性能尤其是整体稳定性的影响不容忽视；当支管与主管直径接近时，节点轴向刚度和抗弯刚度均较大，基本能够满足节点刚接的要求

Results Under our experimental conditions, three kinds of NO donors when in lower concentrations could not cause obvious changes of axons while when the concentration of DETA NONOate was doubled, it could induce the non-selective demyelination and Wallerian degeneration of both sensory and motor nerve fibers.

结果：在本实验条件下，应用三种NO供体的低浓度，都不能引起大鼠坐骨神经轴突的改变；将DETA NONOate浓度加倍则可导致轴突脱髓鞘和沃勒变性，但对有髓鞘纤维和无髓鞘纤维并无选择性作用。

Secondly, with a triaxial test instrument for unsaturated loess which can work with computerized tomograph carried original Q3 and Q2 loess testing on instantaneously, quantificationally and undamaged scanning. Combining CT images, data and stress-strain curve, this paper divided shearing process into 4 period with respectively analyzing studying.

其次，应用非饱和黄土的三轴CT扫描仪，进行了原状Q_3、Q_2黄土的三轴试验过程的动态、定量、无损的CT扫描，结合CT图像、数据与应力应变关系，对非饱和黄土的剪切过程分4个阶段进行了深入分析研究。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。