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This control method can provide back-pressure cylinder to limit the speed, so the speed stability is good, commonly used in the double-acting cylinder speed control.

这种控制方式能为气缸提供背压来限制速度，故速度稳定性好，常用于双作用气缸的速度控制。

An elliptic rotating field is produced when an induction motor operates in asymmetry, this paper proposes a model of jointed motion to describe the motion of an elliptic rotating vector and states that the elliptic rotating vector is jointed with two components, the main one rotates forward at a uniform speed while the adjunctive one jointed at the topend of the main one rotates backward around the joint point at a double speed, both make the elliptic rotating vector rotate at swinging amplitude, speed and direction.

感应电机不对称运转时产生椭圆旋转磁场，本文建立了描述椭圆旋转矢量的接合运动模式，说明椭圆旋转矢量是由一个主矢量带动一个付矢量一起旋转构成的接合矢量，主矢量以匀速旋转，付矢量链接在主矢量顶端同时绕着链接点相对主矢量以二倍速反向旋转，两者共同构成的一个单向椭圆旋转矢量。

Then we can get the curve of Bit error rate. The influence of speed to Bit error rate in high-speed movement is studied. Results indicated that speed plays a small part to Bit error rate.

并且还研究了在列车高速运动的时速度的变化对误码率的影响，得出了速度的提高对误码性能影响不大的结论。

Although factors that affect the quality of an image captured at high speed include scene luminance, aperture size (f-number, f/#), shutter speed, and field of view, a simple calculation can determine the approximate shutter speed needed for such an application.

尽管影响高速捕捉图像质量的因素包括场景的亮度、镜头大小、快门速度和视野，不过对于这样的应用场合可以很简单就计算出大致所需的快门速度。

It design an overloading protection equipments base on the characteristic of the Super High-speed rotating equipment ,which are fit for a certain super high-speed rotating equipment,,and analysing the mechanical characteristic of the super high-speed rotating part by the finite element method.

针对超高速旋转设备的工作特点，设计了适合超高速旋转设备使用的过载保护装置，并利用有限元方法分析了超高速旋转条件下的转子力学特性；对包括模态、冲击响应、谐响应等在内的过载保护器动态特性以及工作过程中产生的不平衡量和摩擦热等影响过载保护装置正常工作的因素进行了分析计算。

The first part discusses about the effects of the five factors:temperature,relative air moisture,rate of frass sifting,density of larvae,fodder water percentage to growth speed and survival rate of older mealworm (Tenebrio molitor L.) larvae through rotational composite design of quadratic regression. Two models were established to describe the effects of the five factors. The models showed that percentage of fodder water is the major factor that has effect on the growing speed of T. molitor larvae,and fodder water is the major factor on death rate. The models also show that temperature on growth speed,temperature and fodder have important effects on death rate,and the significant test showed they have significant difference on 1% or 5% level. From the two models,by frequency analysis,we can get the optimizing rearing condition,in which the mealworm larvae overweight 10% per day,temperature is 25-26 ,frass sifting rate is once 2-4 days,density of larvae is 0.61-0.79 g/cm2,fodder water is 33.27%-39.71%. And the rearing condition,in which total death rate of T.

第一部分：采用五因素二次正交旋转组合设计，以黄粉虫幼虫饲养过程中饲养温度(X_1)相对湿度(X_2)、虫粪筛除频率(X_3)、饲养密度(X_4)以及饲料含水量(X_5)五因素为参试因素，考查它们对黄粉虫高龄幼虫的生长及存活的影响，建立了以黄粉虫幼虫增重率及死亡率为目标函数的回归模型，并进行了简化： Y_增=127.5079+18.6559x_5+2.7894x_3x_4-2.3854x_3x_5-3.0594x_1~2+1.8241x_3~2-3.8559x_5~2 Y_死=1.7459+0.4108x_1+0.0975x_2+0.9025x_4+0.3442x_5+0.0834x_1~2+0.3060x_4~2-0.2623x_5~2 分析结果表明：影响黄粉虫幼虫生长后期增重及死亡的主要因素分别为饲料含水量和饲养密度；饲料含水量和温度对黄粉虫增重有着重要的影响，饲养密度、温度、饲料含水量对黄粉虫的死亡有着重要的影响，其影响均达1％或5％显著水平；黄粉虫幼虫后期日增重率大于10％的饲养条件为：温度26～27℃、筛粪频率2～4天／次、饲养密度0.61～0.79g／cm~2、饲料含水量33.27～39.71％。

In this system,the VVVF(variable voltage variable frequency) control method based on magnetic flux trajectory is applied.In the system,it is the target for the magnetic flux linkage polygon to be greatly approximate to the ideal magnetic flux circle.Considering such limitations as the low speed torque ripple,high speed real time and the working frequency of switching element,through the subsection synchronization control method by applying different numbers of magnetic flux linkage polygon for different frequency range,the perfect precision specifications for speed can be obtained.

系统采用基于磁通轨迹法的他控式变频调速方案，以磁链多边形尽量逼近理想磁通圆为目标，并考虑低速转矩脉动、高速实时性和开关元件的工作频率限制等约束条件，通过采用分段同步控制方式，在不同的频段采用不同的磁链多边形边数，使系统获得了优异的转速精度指标。

An object receives in proportion to its speed resistance, and only receives its force of inertia the impetus, but the movement, through the isotopic dielectric, divides into the time the equal gap, forms the geometric series in time each time-gap's start's speed, but during passed over gently and swiftly distance in proportion to this speed.

如果一个物体受到正比于其速度的阻-，并只受其惯性力的推动而运动，通-均匀介质，把时间分为相等的间隔，-则在每个时间间隔的开始时的速度形-几何级数，而其间掠过的距离正比于-速度。

Condition: If an object receives in proportion to its speed resistance: and only receives its force of inertia the impetus, but movement: conclusion: Through the isotopic dielectric, divides into the time the equal gap, forms the geometric series in time each time-gap's start's speed, but during passed over gently and swiftly distance in proportion to this speed:.

通过均匀介质，把时间分为相-的间隔，则在每个时间间隔的开始时-速度形成几何级数，而其间掠过的距-离正比于该速度

The change of speed of autoconversion of snow to graupel, different collection efficiency of ice phase particles, the quality content or number content averaged falling speed, various parameters of quality and falling speed of snow, will influence the quality and number content of water substances.

雪晶自动转化成霰、不同的冰相粒子间的碰并效率、不同的雪晶质量系数和落速系数和采用不同的平均落速，将影响粒子的比质量和比数浓度；模拟大陆性云和海洋性云应采用不同的云参数；冰晶核化应考虑温度变率和水汽冰面过饱和度。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。