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Therefore, this algorithm is applied to inverse analysis of mechanical parameters in Pump and Brake Program .It is shown that this algorithm can be used for back analysis of mechanical parameters in engineering.

基于该算法进行了泵闸工程力学参数的反演分析，结果表明免疫遗传算法结合了遗传算法和免疫算法的优点，可以在工程中广泛应用。

The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.

介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律，并在其基础上，通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律；在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上，采用铝合金平板堆焊阶跃试验，利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数，建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。

According to concrete conditions of the wing flap retraction-extension system of the 18 trainer aircraft, this paper ca nes out a research into the relibility demonstration test and the life test plans of the system, and deals with some key issues related to the test in a deep manner, such as relation between the reliability test parameters and the reliability indexes, converting from working time, composite test profiles, the mathod determining reliability test parameters for success ratio and so on.

本文针本对L8机襟翼收放系统的具体情况，研究了其可靠性验证试验和寿命试验方案，并深入研究了涉及试验的关键问题，例如：可靠性试验参数与可靠性指标之间的关系，工作时间与工作次数的折算，合成试验剖面，确定成败型可靠性试验参数的方法等等。

The parameters of HMM are discussed and then the optimum model parameters are trained based on the re-estimation formula.

讨论隐藏式马尔可夫模型所需之参数与利用估测方程式递回地训练出最佳的模型参数。

In the training of HMM, referring to the auxiliary function in reference〓, and the method in reference〓 to get the estimations of the parameters of Markov chain, we define the likelihood function and auxiliary function for the maximum likelihood estimation of CDHMM, and then induce systematically the forward-backward algorithm and the re-estimation formulas for parameters of CDHMM.

在HMM的建模方面，本文借鉴文献〓中求多变量观测值马尔可夫链参数时辅助函数的选取方法，定义了CDHMM的似然函数和辅助函数；借鉴文献〓中求解马尔可夫链参数时的求偏导方法，并针对本文辅助函数加以简化和改进，系统地推导了HMM的前向—后向算法，以及CDHMM各参数的极大似然估计公式。

The kinetics model was gotten based on the alkyl mechanism, light olefins re-absorption and re-reaction. The kinetics experiment is carried out over the selected Fe-Mn-K catalyst, and the kinetics model parameters is got base on the kinetics experiment data. The parameters explain the reaction results that the carbon monoxide content is high, the methane content is the biggest of the hydrocarbon products and the olefin content is bigger than the corresponding alkenes content.

本文同时对该反应的反应机理和动力学进行了研究，以烷基机理为基础，建立了考虑烯烃再吸附和二次反应的动力学模型，并在选定的催化剂上进行了相应的动力学实验，结合动力学实验数据计算得到了相应的动力学模型参数，模型参数值解释了反应产物中CO的含量较高，以及烃类产物中CH4含量最高和烯烃含量大于相应的烷烃含量。

Plackett-Burman experimental design and the uniform experimental design were used to select the main factors of the ball milling pretreatment of corn stalk. The experimental results were analyzed by data processing software and well-fitted regression equation was established. Effects of ball milling parameters, such as raw material diameter, speed, ratio of raw materials, grinding media and alternating time, on the enzymolysis were analyzed. The optimal parameters of ball milling pretreatment of the corn stalk were as follows: particle size of raw material of 0.5 mm, speed of 340 r/min, the raw material content of 3.4 g, the number of ball of 15 (Ф= 10.0 mm), alternating running time of 5 min.

研究了玉米秸秆水解过程中球磨预处理工艺的优化，采用Plackett- Burman 试验设计和均匀试验设计法，用数据处理软件对试验结果进行分析，筛选出了球磨预处理过程中的主要影响因素，得到了具有较好拟合度的回归方程；通过分析原料粒径，转速，原料填装量，研磨介质，交替时间等球磨条件对酶解效率的影响，得出行星式球磨机粉碎玉米秸秆的最佳工艺参数为：原料粒径0.5 mm，转速340 r/min，原料填装量3.4 g，装球量15个（Ф=10.0 mm），交替运行时间5 min。

The relative parameters defined as the ratio of parameters under the two water-supply conditions were also used for QTL analysis.

淹水与干旱条件下检测到一个共同的种子根长QTL和一个共同的总根干重QTL。

In this paper, based on the volume balance equation of water, adopt IPARM method to estimate the soil permeation parameters of Kostiakov-Lewis equation in furrow irrigation, according to a set of field furrow irrigation data to estimate the parameters, and utilizing WinSRFR1.1 software to simulate the water flow in furrow irrigation.

该文以水量平衡方程为基础，采用IPARM方法建立了沟灌Kostiakov-Lewis入渗方程中参数的估算方法，并根据一组田间实测沟灌资料对入渗参数进行了估算，利用WinSRFR1.1软件对沟灌水流运动进行了模拟。

1 Bring displacement impact analysis for the orthogonal law surrounding rock mechanics parameters and initial tests to stress Quzhi changes will lead to varying degrees of influence displacement volume changes, we can make this change, as the parameters for the impact of displacement.

2.1 巷道位移影响度分析的正交试验法围岩力学参数和初始地应力取值的变化将会导致巷道位移量不同程度的变化，我们可以把这一变化，看作是各参数对位移的影响度。

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。