参数

Finally, the parameters, such as density, thickness of porous media, thickness of steel of each material in air and porosity, pore size, thickness of porous materials, thickness of steel and incident angles in water were investigated and also the influence on the sound absorption and insulation were discussed.

最后，分别就空气中以及水中的材料参数，分门别类的观察其对吸音与隔音的影响。在空气中所讨论的参数，有多孔材密度、多孔材厚度、钢材厚度。在水中所讨论的参数，有多孔材孔隙率、孔隙尺寸、多孔材厚度、钢材厚度、声波入射角度。

Any letters beyond these requirements are to be excluded, so if the decree specifies k comparisons then the new alphabet will contain the first k+1 lowercase letters of the current alphabet. Create a class Alphabet that contains the method choices that takes the decree as input and returns the number of possible new alphabets that conform to the decree. If more than 1,000,000,000 are possible, return -1. Definition Class: Alphabet Method: choices Parameters: string Returns: int Method signature: int choices Constraints decree contains between 1 and 25 characters inclusive.

我注：如上面的BAA有3个字符，那么新表就有4个，也就是'd'后面的全被忽略创建一个名为Alphabet的类，此类含有一个名为choices方法，choices方法以&规定&作为参数输入，然后返回所有符合这个规定的新字母表的可能数，如果大于1，000，000，000可能，就返回-1 定义：类名：Alphabet 方法：choices 参数类型：string 返回值类型：int 方法签名：int choices (确保choices为公有方法)参数条件：规定中的'B'和'A'总和必须大于等于1，小于等于25 举个例输入：&BAA&返回：3 解释：因为根据规定'a'在'b'的前面，'b'在'c'的后面，'c'在'd'的后面，所有符合这个规定的新字母表有3个：adcb、dacb和

In the fourth paragraph, how the theory of the damping to forging hammer foundation advances at home and abroad, the research and application of the implement for damping to forging hammer, the structure of damping to forging hammer and the calculation methods for forging hammer foundation vibration system, which are used at home nowadays, are particularly introduced.In the fifth paragraph, aiming at direct damping under anvil block of forging hammer, the author bases a mechanics model of two-degree with damping, and optimizes the vibration parameters both in frequency field and in time field, then finds out the new simple method of optimizing the vibration parameters of the damping device under anvil block of forging hammer.

第五章针对锻锤砧下直接支承式减振基础，建立了锻锤减振系统的二自由度有阻尼振动力学模型，然后用傅立叶变换法求出振动传递率的频率关系，用直接积分法求出砧座和基础位移的时域响应，并分别对频域函数和时域函数进行参数优化，最终建立起频率函数—时域函数—优化参数间的相互关系，从而找到了锻锤砧下隔振器参数优化的简便新方法。

The pulsed power supply used to perform the experiments consisted of three modules storing 800kJ as a driver for an ablation-controlled arc plasma generator. A sequence of tests in which the capillary radius, length and ablated material are varied and in which the capillary power dissipation levels are varied in a certain range are discussed in order to determine the impedance matching between the discharge and the power source.

利用一个总贮能800kJ的模块化电容基脉冲功率源系统为消融控制电弧等离子体发生器强流放电提供电能输入，在一定的参数变化范围内，实验研究了脉冲功率源初始放电参数、等离子体发生器几何参数以及消融材料对消融控制电弧放电特性的影响规律。

The location compute equipment of object is an effective means to acquire object's location quickly and accurately, target distance parameter is offered by laser range finder, and geodetic position of observation point is obtained by GPS, azimuth and pitch angle are offered by azimuth compass.

目标位置解算装置是快速、准确地获取空中或地面目标位置坐标的有效手段，由激光测距机提供目标距离参数，由GPS接收机获得观测点坐标参数，方位获取设备提供目标方位角及高低角参数。

According to the geological property of the research area, we apply sequence indicator simulation method if the reservoir type is discrete variable. Sequence Gauss simulation method is used if the type of reservoir property is continuous variable. Structural model (single well model, fault model and bedding model) and property model are built. The 3D distributions of reservoir parameters are established based on structural model. Three advantage oil distribution of the oil field are pointed out through overlap of the reservoir parameters distributions.

根据研究区的地质特征，建模过程中的储层类型属于离散变量，选用序贯指示模拟方法；储层参数属于连续变量，则选用序贯高斯模拟方法，对储层分别实现构造建模(单井模型、断层模型和层面模型)和属性建模，在构造模型的基础上建立储层参数的三维分布，通过储层参数的分布的叠合研究，在该油田指明了三个有利油气分布区块

To combine immediate modeling with sketch modeling, increased the level of parameterization about structural design of belt pulley.

通过直接造型与草图造型相结合，提高了皮带轮结构设计的参数化程度；通过设置开关参数增加了皮带轮三维模型模板的适用类型，为轮盘类零件的参数化结构设计提供了有益的探索途径。

This system has realized bottle design parameterization and mold design automation by three pieces of function modules. They are the Bottle Design Parameterization module, the Mold Design Automation module and the Mold Strength Check module.

该系统分三个功能模块实现了瓶子的参数化设计和模具的自动化生成，即瓶子的参数化设计模块、模具的参数化设计模块和模具的强度校核模块。

Taking the key parts of the bucket wheel stacker-reclaimer as the researched object, this paper discussed the basic principle and primary methods of parametric design based on SolidWorks.

以斗轮机关键零部件作为研究对象，论述了参数化建模技术基本原理，对基于SolidWorks参数化设计的主要方法进行了详细介绍，并介绍了斗轮机关键零部件三维参数化设计的具体实现过程。

The two kinds of design methods for the microwave active filters are studied, which involve the negative resistance circuit design method and the network cascade method, and how to translate the lumped parameter circuit into the distributed parameter circuit is given.

同时，给出了集中参数电路转化为分布参数电路的方法，结合设计实例，给出了两种微波有源滤波器的计算机模拟结果和分布参数电路的几何尺寸。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。