结网

And the acoustic pressure phase sensitivity frequency response properties are investigated in terms of theories, simulations and experiments.

实验结果验证了小尺度结(来源：ABCb5论5d文网www.abclunwen.com)构下水声低通滤波理论及模型的正确性。

The paper applies algebraic geometry, computational geometry, approximation theory to study the following problems: the Nother type theory and the Riemann-Roch type theory of the piecewise algebraic curve; the number of real intersection points of piecewise algebraic curves; the real piecewise algebraic variety and the B-net resultant of polynomials.

本文应用代数几何，计算几何，函数逼近论等学科的基本理论，分别就分片代数曲线的Nother型与Riemann-Roch型定理；分片代数曲线的实交点数；实分片代数簇以及多项式的B-网结式进行研究。

With a plant site of 100,000 square meter and over 700 skilled worker, we have thirteen most advanced tufting machines by computer control, use polypropylene, acrylic, wool and Nylon for the main materials and making variety of graphic multiloop, multicut and loop carpets. We strictly insist on JIS Japan standard and have an annual yield of 8 million square meter. Our products include carpet tile, broadloom carpet, car mats and door mats so that we can offer best choice for residence and commercials, such as houses, hotels, offices and public facilities.

工厂拥有目前世界最先进生产设备电脑数控簇绒机13台，网结了日本与欧美国家先进的生产技术与管理方式，以尼龙、丙纶、羊毛、羊毛混纺等为原料，生产各种高中档地毯，包括方块毯、满铺毯、汽车毯、门口毯等，年总产量超过800万平方米，所有生产流程完全符合国际JIS认证标准，公司在国内外都设有完备的销售网络，业务遍及世界各地，在中国境内上海、南京、北京、青岛、广州、香港等都设有办事处，另有300多家代理商分布各地，外销方面其范围包括日本、韩国、东南亚、新加坡、台湾、印尼、中东、爱尔兰、英国、美国、澳大利亚、加拿大、荷兰等。

The results were asfollows:When the ratio of HY zeolite to raw material was 2.5g/100mL and thereaction was heated to 140℃for 4h,the effect of isomerization of turpentinewas better, the conversion rate of pinene was 97.02%,and the selectivity ofcamphene was 42.88%.When the ratio of HZSM-5 zeolite to raw material was4.5g/100mL and the reaction was heated to 140℃for 4h,the effect ofisomerization of turpentine was better, the conversion rate of pinene was86.24%,and the selectivity of camphene was 46.95%.

结(来源：A45BC论ba文网www.abclunwen.com)果表明：HY型沸石分子筛催化，当其用量为2.5g／100mL原料，反应在140℃下维持4h时，松节油的异构化效果较好，蒎烯转化率达97.02％，莰烯选择性为42.88％；而HZSM-5型沸石分子筛催化，当其用量为4.5 g／100mL原料，反应在140℃下维持4h时，松节油的异构化效果较好，蒎烯转化率达86.24％，莰烯选择性为46.95％。

Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论，系统地分析环境振动识别方法的主要方法，讨论它们的优点和不足；建立结(来源：6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型，分析有限元模型与试验模型之间的相互关系；改进谐波识别中的MUSIC识别方法和相关函数识别方法，给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法，这个方法是多元谐波识别方法；提出直接识别结构的物理参数和模态参数的最小二乘方法，这个方法利用导数的近似值代替导数值，并运用最小二乘方法识别结构的物理参数，讨论导数近似值的选择方法，分析算法的收敛性；通过仿真计算和模型实验，研究高层框架结构的模态参数识别，验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性，算法的稳定性；从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。

Leaves simple, commonly opposite and decussate with one of a pair slightly smaller than other, rarely verticillate or alternate by abortion of one of a pair, usually 1-4(or 5) secondary veins on each side of midvein, originating at or near base and anastomosing apically, tertiary veins numerous, parallel, and connecting secondary veins and midvein but in Memecylon secondary veins pinnate and tertiary veins reticulate.

托叶无。单叶，通常对生和交互对生的具其中一片较小的叶，很少轮生的或由于一对中一枚败育而互生，通常次脉在中脉两边各1-4(或5)，发生在基部或近基部，在顶部网结，支脉多数，平等，与次脉和中脉相连但在 Memecylon中，次脉羽状和支脉网状。

The present paper deals with observation of some sensorystructures (including sensory ncdules and pits on tergum of abdomen) ofadults of 12 species lacebugs of Tingis Fabricius in both sexes,under thescanning electron microscoup,demonstrating the morphological structurecharacters of them and their bearing in classification.

对内蒙古菊网蝽属Tingis Fabricius 12种网蝽的雄雌成虫体表感觉结构植行了扫描电子显微镜观察研究，揭示了该属昆虫体表感觉结的形态结构特征及其在分类学中的意义。

The apparent degree of network chains for the different swollen extent of the same unswollen hydrogel sample increased linearly with the increase of swelling ratio, however, the apparent modulus did not decrease monotonously with the increase of swelling ratio. Furthermore, the dependence of apparent degree of network chains on swelling ratio had nothing to do with the swelling agent. The above results reflected the changes of entanglement and the contribution of entanglement under different swelling ratio, and the results could be explained with the theory of Flory-Erman's constrained junction model and LangleyGraessley relation.

发现同一水凝胶样品的不同溶胀程度试样经应力应变测试得出的表观网链密度随体积溶胀率的增加而线性增加，等效模量并不随溶胀程度的增加而单调减小，而表观网链密度的溶胀程度依赖性与所选用的溶胀剂无关，该结果反映了不同溶胀程度下缠结的变化及缠结对弹性的不同贡献，并可由Flory-Erman的constrained junction模型及Langley-Graessley公式得到解释。

The paper introduces the followings: the structure, process of knot-knitting and net-making, main technical parameters, applicable range of the netting twines and so on. The paper presents the design process of some typical parts of the machine and centers on the optimum design of the cam curve and improvement the manufacturing technology.

本文介绍了 ZRD8-500A 双钩型织网机的结构形式、织网成结过程、主要技术参数以及适用网线范围等；还介绍了几个典型机构的设计过程，重在凸轮曲线的优化设计和提高制造工艺。

The test shows ——in the condition of specific air capacity, setting only cotton web cleaner can advance yarn forming quality in some degree, and compared to normal back cover guard, evenness CV value of setting cotton web cleaner is reducing by 0.5 percentage point to 0.7 percentage point, thin place is decreasing...

试验结果表明：在一定风量条件下，单独加棉网清洁器对提高成纱质量有一定效果，与后罩板不变相比条干CV值减少0。 5个百分点~0。 7个百分点，细节下降33。 3%~44。 4%，粗节下降16%~24。 5%，棉结下降19。 6%~29。 3%，强力CV也有一定改善；如风量得当，单独加棉网清洁器可起到与加固定盖板相同的作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。