振幅

The optimization of the length and position of a regenerator as well as the size of the resonator were studied numerically.

对热声板叠的长度、热声板叠在共振管中的位置以及共振腔的几何大小对热声振荡振幅的影响进行了数值计算。

The main research content is: Using the experimental of cutting force and roughness of high speed face milling cutter and high speed end milling cutter mill aluminium alloy and cast iron, analyze the rules of the high speed milling velocity, feed rate per tooth, milling depth and milling width to high speed processing. Use multiple linear regression method, set up surface roughness and the cutting force fluctuation models. Certify the regression model notability, and provide a reliable guarantee for the accuracy of function optimization. Based on the targets of productivity, manufacturing cost, surface roughness, cutting force fluctuation optimization model, according to research of the high speed milling parameters selecting restrict of work piece, machine, tool and safety, set up high speed milling parameters multi-object optimization system.

本文以已有的高速铣削机理及高速刀具技术研究成果为基础，结合高速铣削试验，进行了基于遗传算法的高速铣削参数优化研究与系统开发，主要的研究内容为：通过高速面铣刀和高速立铣刀加工铝合金和铸铁等材料的切削力和表面粗糙度试验，进行了铣削速度、每齿进给量、铣削深度和铣削宽度对高速铣削加工过程影响的研究；采用多元线形回归的方法，建立了切削力及其振幅和表面粗糙度模型，并对模型的显著性进行验证，为高速铣削参数优化模型的建立奠定了基础。

The study of sedimentary microfacies using seismic data requires regular variation information of reflection time and amplitude between seismic traces. Such information is useful to the description of the change of microfacies.

用地震资料进行沉积微相研究，需要深入研究并利用地震道与道之间反射时间和振幅的规则变化信息，这样可以较为有针对性地描述微相的变化。

The present paper attempts to examine the above "selective regular amplification" phenomenon in terms of numerical simulations based on the phase-field model.

本文旨在对上述枝晶生长在小振幅外信号源作用下的"选择性规则化放大"现象应用相场模型进行数值模拟研究。

Furthermore, the relationship between discharges of iron powder and flow time, the relation between discharge rate and vibration frequency, and the relation between discharge rate and vibratory amplitude are also studied by means of experiments, and a graph representing the variational relation among these parameters is made.

并通过实验方法研究了80目铁粉通过小孔流出时，其流动性与孔径以及振动加速度的关系、流出体积与流动时间的关系以及流量与振动频率、振幅的关系，并给出了其间的变化关系曲线图。

Numerical Simulation and Experimental Investigation on A Thermoacoustic Engine with Tapered Resonance Tube A symmetrical standing-wave thermoacoustic engine with tapered resonance tube has been numerically simulated with liner thermoacoustics. The simulation shows that using tapered resonance tube in thermoacoustic engine could decrease the velocity amplitude and lower the total acoustic power loss in the resonance tube. The experimental results indicate that the harmonic was suppressed effectively by using the tapered resonance tube, and the pressure ratio was improved.

采用锥形谐振管的热声发动机的数值模拟和实验研究利用线性热声理论，对一台采用锥形谐振管的驻波型热声发动机进行了数值模拟，发现采用锥形谐振管可有效降低工质气体的速度振幅，进而减小在谐振管中声功率的损失；与一台在相同频率下工作的采用等直径圆柱谐振管的驻波型热声发动机进行了实验对比，结果表明，在使用锥形管作为谐振管的热声发动机系统中，谐振管中的非线性效应得到了明显的抑制，热声发动机在基频模式下稳定运行，压比增大而加热温度降低。

This invention discloses a data retransfer method based on bit conversion which is to exchange positions forming bits, according to selected exchange way before quadrature amplitude modulation to each retransferred data.

本发明公开了一种基于比特变换的数据重传方法，该方法的关键是在每次重传数据进行正交振幅调制之前，对数据内各组成比特的位置按照选定的变换方式进行调换；该方法还进一步包括：a。

This product works on the principle that the inertial vibrating riddler almost reaches resonance. It had a high rate of screening and big swing of the screening machine that it does not jam the screen sieve. It is also of great adaptability to materials. The main vibrating spring uses cutting rubber spring which has low noise, and a long life. It is sealed to prevent environmental pollution. The working efficiency is 3 times than that of the original frequency. It has a good anti-vibrating effect.

该机采用惯性共振系统在近共振状态下工作，单位面积筛分效率高，筛机振幅大不堵筛，对物料适应性强，主振动弹簧选用剪切橡胶弹簧，设备噪音低，寿命长，机壳密闭性好，环境污染小，工作效率为阁振系统固有频率的三倍，有良好的隔振效果。

With twice focal depth extension, supergaussian ring mask suffers less loss in light throughput and lateral resolution than annular Gaussian ring mask.

标 签 傅里叶光学成像系统焦深旋转对称光瞳振幅型掩模板光瞳相位型掩模板

Fast locking time, low jitter performance and low power consumption are required in nearly all PLL applications in modem IC systems. Thus the design of PLL must generally deal with a tight tradeoff between the locking time and the amplitude of the ripple on the control line of oscillator.

在大多数单晶片系统环境设计中锁相回路其快速锁定时间与低抖动值效能和低功率消耗等值为重要的设计要点，然而锁定时间与主要影响振荡器输入电压控制线之振幅扰动的是相互的彼此限制影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。