引入线

The parameter of laser energy transfer efficiency is used in the new model with a clear physical meaning for the first time. The mean absorption factor of laser induced plasma to the laser within the keyhole is calculated according to different welding parameters using the relative intensity method of spectral lines.

首次有机地将激光焊接能量传输效率这一重要的焊接参数以明确的物理意义引入数学模型中；通过谱线相对强度法计算推导出每一个焊接规范下小孔内等离子体对激光的平均吸收系数。

Based on the complex potential method about the plane theory of the elasticity of an anisotropic body,stress distributions in the plate with multiple cracks are obtained by using the conformal mapping and the Faber series expansion.

采用各向异性体平面弹性理论中的复势方法，应用保角映射技术和F aber级数展开，导出在任意载荷作用下多裂纹板应力场的级数解，引入当量屈服应力修正裂尖塑性区，并利用Sw ift韧带屈服准则建立含共线分布多裂纹结构的剩余强度分析模型，计算结果与试验结果吻合较好。

Based on the complex potential method about the plane theory of the elasticity of an anisotropic body, stress distributions in the plate with multiple cracks are obtained by using the conformal mapping and the Faber series expansion. The equivalence yield stress considers the effect on plastic zones. The Swift strip yield criteria is used to predict the residual strength of plate containing multiple collinear cracks.

采用各向异性体平面弹性理论中的复势方法，应用保角映射技术和Faber级数展开，导出在任意载荷作用下多裂纹板应力场的级数解，引入当量屈服应力修正裂尖塑性区，并利用Swift韧带屈服准则建立含共线分布多裂纹结构的剩余强度分析模型，计算结果与试验结果吻合较好。

On the basis of introduction of an epicycloid parameter,δ,an equation is derived for cycloid and its screw surface in screw pump.

本文在引入外摆参量δ的基础上建立了螺杆泵摆线和摆线螺面的方程，并通过对δ的研究，提出了螺杆泵的部分设计理论。

We analyse the affect factor and gives the model of passenger Assignment between transport modes and railway pathways after introduce the pathway chosen problem of overline passenger.

通过引入跨线客流的多径路选择问题，论文分析了跨线客流在交通方式间分配和径路间分配的影响因素，并建立了相应的数学描述。

Distributed parameter model of interconnects in high-speed circuits is introduced, together with its time domain solution. Based on this model, some signal integrity problems are discussed, and simulation results of impedance match is presented.

引入了高速电路互联线的分布参数模型，介绍了模型的时域求解算法，并基于该模型分析了互连线的信号完整性问题，给出了阻抗匹配问题的仿真结果。

A two-times locating method based on the gray contrast of surroundings is presented in locating central reference point. This method has better adaptability and robustness, and can basically meet for the accuracy of automatic locating center. Fourier spectral analysis is improved to obtain a more accurate ridge frequency in computing ridge frequency. The average ridge width is used in designing Gabor filters, so the filters have certain adjustability. The rotating invariance of fingerprint images is solved by the rotating of feature models in feature matching.

在中心参考点定位部分，提出了基于局部邻域灰度对比度的二次定位方法，该方法具有较强的适应性和鲁棒性，基本满足自动中心定位的准确度要求；在频率域估计中，改进了傅立叶谱分析法，提高了纹线频率计算的准确度；引入平均纹线宽度作为Gabor滤波器的设计参数，使滤波器具有一定的自适应性；在特征匹配阶段，通过对特征模板的旋转解决指纹图像的旋转不变性问题。

Therefore, the 'generalized velocity unit' was introduced on the assumption that the surface velocity in the direction perpendicular to the line is a steady velocity frame with the topographic relief. The 3-D tomostatics velocity inversion was improved to suit the crooked wide line geometry.

为此，在假设垂直测线方向上表层速度是随地形起伏的稳定速度结构的情况下，引入&广义速度单元&概念，对三维层析静校正速度反演过程加以改进，使其适合宽、弯线资料观测系统。

Just like what multiple-threaded model does. But that also invites the synchronization issues that happen in multiple-threaded model.

如果多线程模型中所做的那样，然而这同样会引入在多线程模型中出现的同步问题。

Then based on analysis of on-line data,the work condition with shut-up of one coal feeding system is taken as one important work condition with more frequency.Then the number of working coal feeding system and load is introduced into model. The system is analyzed based on DHA framework,and MLD model is produced with HYSDEL programming language.

根据对现场运行数据的分析，确定给煤线断煤是运行过程中一种发生频率较多的工况，将正常运行的给煤线数目和负荷作为非连续参数引入模型，对模型进行了基于DHA框架下的混杂系统分析，并利用HYSDEL语言建立了MLD模型。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷