参数

The technological parameters of aluminium profile anode oxidation and sealing hole working procedure can influence the quality of anode oxidation film sealing hole,so we must pay attention to controlling the technological parameters while producing.

铝型材阳极氧化各工艺参数及封孔工序各工艺参数都会影响阳极氧化膜冷封孔的质量，在生产中必须严格控制这些工艺参数。

The uncertainties of re serves calculation parameters, such as reservoir volume, porosity, fluid interface, hydrocarbon saturation and volume factor, are evaluated and given a possible variation range respectively, by analyzing their geological origins. The uncertainly variations of reserves calculation parameters are represented in geological modeling, and the OIIP evaluation is made by a combination of geological models with Monte Carlo simulations.

通过分析影响储层体积、孔隙度、流体界面、含烃饱和度以及体积系数等储量计算参数不确定性的地质成因，对各参数的不确定性进行评价并给出可能存在的变化范围；在地质建模中体现储量计算参数的不确定性变化；基于地质模型并结合Monte Carlo模拟方法进行地质储量评价。

An equal cross-section blade was investigated and a finite element model was built parametrically. Geometrical parameters (such as length, width and thickness), material parameters (such as young's modulus and density) and speed of blade were considered as input random variables while the static frequencies and dynamic frequencies were output random variables. Combining the finite element method, response surface method and Monte Carlo method, the statistical properties and cumulative distribution functions of static frequencies and dynamic frequencies were obtained. Probability sensitivities analysis, which combined the slope of the gradient and the width of the scatter range of the random input variables, was applied to quantitatively evaluate the sensitivities of static frequencies and dynamic frequencies with respect to the random variables. The Scatter plots of structural responses with respect to the random input variables were illustrated how to adjust the values of the static frequencies and dynamic frequencies by changing input random variables.

文中以某试验台用汽轮机等直叶片为研究对象，考虑几何参数、材料参数和转速的随机性，通过有限元参数化建模，将确定性有限元方法、响应面方法和Monte-Carlo模拟法相结合，从而获得了叶片静频、动频的统计特性和累积分布函数；同时考虑随机变量的梯度和离散范围对静、动频的影响，通过概率敏感性分析，定量地判断出叶片静、动频对随机输入变量的敏感性；通过绘制叶片静、动频与输入变量的散点图，定量地分析了如何改变随机变量以调整静、动频率的方法。

First, the scattering parameters of PT are transformed in to Y-parameters and equivalent "p" circuit model could be established. Second, vector fitting method is used to approximate admittances of equivalent "p" circuit model by rational functions. At last, a circuit synthesis method for rational functions is applied to build circuit model.

该方法首先将测量得到的互感器的散射参数转化为导纳参数并构建互感器的p形等值电路；然后，应用矢量匹配法对p形等值电路的导纳参数进行有理函数逼近获得它们部分分式和形式的频域表达式；最后采用电路综合方法构建出导纳元件的等值电路。

Such parameters as the percentage of ordinary reinforcment, amounts and configuration of unbonded prestressed tendons, the ratio of span to depth and the loading patterns were considered. Based on the results, the fomula for the eqivalent length of deformation zone on the beams at ultimate were developed. A simple formula was developed for the ultimate mid-span deflection of concrete beams with concept of equivalent length of deformation zone, and the deformation of beam before internal reinforcement yielding was predicted by the traditional formula for the deformation of partically prestressed concrete beam. Then an analytical model was deduced for analyzing the ultimate stress increment in those concrete beams prestressed with external or internal unbonded tendons based on the mid-span deflection.(4) Testes were carried out on a thin-walled concrete box beam presressed with external CFRP tendons to study its short-term performances under uniform load, long-term behaviors under uniform load, and full-time performance under four-point load in turn.

3以体内非预应力钢筋配筋率、体外预应力筋配筋率、体外预应力筋布置形式、预应力度、跨高比、荷载形式等为参数，用非线性分析程序对体预应力筋混凝土梁进行了参数分析，依据分析结果提出了以综合配筋指标和预应力度为参数的等效变形区长度的计算公式，进而提出了基于等效变形区长度的极限挠度计算公式；体内非预应力钢筋屈服前的挠度计算采用常用的部分预应力混凝土梁挠度计算公式；依据试验和非线性数值计算结果，将不同转向块布置形式的体外预应力混凝土梁简化为跨中一个转向块的体外预应力混凝土梁，推导了基于跨中挠度的体外预应力筋应力增量的简化计算公式。

Such parameters as the percentage of ordinary reinforcment, amounts and configuration of unbonded prestressed tendons, the ratio of span to depth and the loading patterns were considered. Based on the results, the fomula for the eqivalent length of deformation zone on the beams at ultimate were developed. A simple formula was developed for the ultimate mid-span deflection of concrete beams with concept of equivalent length of deformation zone, and the deformation of beam before internal reinforcement yielding was predicted by the traditional formula for the deformation of partically prestressed concrete beam. Then an analytical model was deduced for analyzing the ultimate stress increment in those concrete beams prestressed with external or internal unbonded tendons based on the mid-span deflection.(4) Testes were carried out on a thin-walled concrete box beam presressed with external CFRP tendons to study its short-term performances under uniform load, long-term behaviors under uniform load, and full-time performance under four-point load in turn.

3以体内非预应力钢筋配筋率、体外预应力筋配筋率、体外预应力筋布置形式、预应力度、跨高比、荷载形式等为参数，用非线性分析程序对体预应力筋混凝土梁进行了参数分析，依据分析结果提出了以综合配筋指标和预应力度为参数的等活动房效变形区长度的计算公式，进而提出了基于等效变形区长度的极限挠度计算公式；体内非预应力钢筋屈服前的挠度计算采用常用的部分预应力混凝土梁挠度计算公式；依据试验和非线性数值计算结果，将不同转向块布置形式的体外预应力混凝土梁简化为跨中一个转向块的体外预应力混凝土梁，推导了基于跨中挠度的体外预应力筋应力增量的简化计算公式。

With proper equations of state the relationship between the pressure and the isothermal bulk modulus is presented, which is compared with those data that come from PREM and PEM values. In order to know more about the property of matter in the inner earth's core we presented the relationship between the temperature and the volume, and the relationship between the temperature and the thermal pressure.

采用与现有地震学数据一致的地核物质状态方程，计算了300K时压强-不可压缩系数的关系图，并与地核环境下PREM、PEM模型的数据加以比较；给出了内地核环境下温度-摩尔体积、温度-热压等参数的关系曲线，研究了地核物质的热学参数；应用计算所得到的热压值，借助量子统计物理的方法，列表给出了与内地核物质量子效应有关的各项参数。

In this paper, a new homotopy technique based on the parameter expansion is proposed to study strongly nonlinear oscillation .

提出了一种基于参数展开的新的同伦分折技术：结合参数展开技术和同伦理论将一非线性动力系统(不要求系统内含有小参数)的求解问题转化为组线性微分方程的求解问题，并将之运用到强非线性振动领域。

In order to make these silver paste successfully used in commercial, a clear understanding is required for the complex relation between different parameters such as particles size, solid volume fraction, packing density on suspension printing and deformation and the mechanism of silver powder sintering shrinkage and the inorganic adhesive effect under the batch manufacture condition.The main emphasis of our researches was to improve the silver paste properties by developing a reliable, screen-printing paste suitable for fine lines and lower sintering porosity and good interface between thick film and glass substrate.

为开发电学性能稳定、高导电率、具有良好细线印刷性能及优良附着性的高性能电子浆料，本研究着眼于对影响参数进行详细剖析，找到关键控制参数，通过研究微观结构与粉末参数的对应关系，找到如何能制备出具有致密的厚膜结构与较低的孔隙率，并且其浆体与有机载体的界面区也要有明显的改善的电子浆体；同时对批量生产的银粉的形态与粉末烧结反应的收缩现象，无铅玻璃体系对银膜致密化等过程进行研究，获得致密高导的无铅银浆料。

The result indicated that 100 mg/L oxytetracycline could irreversibly ruin the pond ecosystem. 20 mg/L and 4 mg/L oxytetracyline could temporarily affect those parameters, which returned to normal in two or one week. 0.8 mg/L oxytetracycline did not cause any detectable effects on those parameters.

结果表明， 100 mg/L用药造成系统不可逆性的破坏； 20 mg/L和4 mg/L浓度的用药对系统参数造成的影响比较短暂，系统参数分别在2 wk后和1 wk后恢复正常； 0.8 mg/L用药对系统参数几乎不造成可测定的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。