变速

A new hyperbolic function s method for finding exact solutions of nonlinear partial differential equations;2. The control strategy based on hyperbolic function is proposed and relative mathematical model is built.

为此讨论了车辆变速行为的一般规律，提出基于双曲函数的车辆变速控制策略，建立了相应的数学模型，并针对实例进行了具体分析。

The impact of parallel operation of wind turbines on power flow is analyzed, in which the squirrel cage induction motors are used as the constant speed wind turbine and the double fed induction motors are used as variable speed wind turbine.

分析了以鼠笼感应电机作为发电机的定速风电机组和以双馈感应电机作为发电机的变速风电机组并网运行对系统潮流的影响，并对不同控制模式下使用双馈感应电机的变速风电机组的电压和无功控制特性进行了比较。

On this base, also ameliorate assembling manner of each components in STGB by selecting materials, geometry parameter and machining technology. So increase consumedly the quality of joggle gear in STGB, and control effectively noise.

在确定齿轮传动形式的基础上，通过对齿轮的材质优选、几何参数的试验选择以及加工工艺的合理选择，同时通过对启动变速箱内各零部件装配方式的改进，使启动变速箱内齿轮啮合质量得到较大幅度的提高，从而有效地控制了噪声的产生。

The three order polynomial of pump's efficiency curve for different speeds was inferenced for the first time, and the mathematical model for optimal operation of pumping unit by speed control was established.

详细地研究了螺旋离心泵的变速性能。首次推导出不同转速下泵效率曲线的3次多项式方程，并建立了变速优化运行数学模型。

Alloy frame, Double Wall Alloy tire circle, Dishing brake, forging suspension front fork, Alloy adjustable handlebar stem with gears, alloy handle, alloy retroflex saddle tube, alloy adjustable rack, middle parking rack, Alum-plating electric mudgurads, alloy cranks, 1.75 glisten tires. SHIMANO 6-speed chains linker, SHIMANO gearlever, spring saddle,24V.9AH/13AH battery, intelligent meterplate, LED front and rear lights, 3-grade Electric Assist Driving System（1st,Bike;2nd,1:1 Standard Riding Pull-assist; 3rd,Strong Pull-Assist） 6-grade Manual speed changes,1.8A NiMH Battery chargerAlloy Power-cut Brake handle

描述： 6061#铝合金高强度车架，铝双层车圈、前后碟刹、铝前花鼓、锻造铝合金减震前叉、有牙铝合金把立、铝合金把横、铝合金翻转鞍管、铝合金可调节衣架、中支撑、铝合金曲柄，镀铝导电型前后泥板、1.75反光轮胎、禧玛诺外6速拨链器、禧玛诺变速杆、弹簧减震坐垫、9AH/13AH镍氢电池、智能仪表盘、LED照明前灯、后LED灯、三档电动助力驱动系统（一挡、自行车；二挡、1：1标准骑行助力；三挡、强助力）、6档机械变速、1.8A镍氢电池充电器、全铝断电刹车握把。

To fine reasonable solution, in Chapter 3, its stable state stability has been analyzed in detail, including in the self-excited mode and external-excited mode separately.

在比较各种调速方法的基础上，首先对交流励磁变速电机的应用前景进行了分析，并分析了交流励磁变速电机的研究现状。

I find it helps to think of numbers 1 and 3 on your left shifter as options for extreme circumstances.

我个人的感觉是，前变速的第一盘及第三盘是您可以利用在特殊的骑乘状况下的，平常的骑乘以第二片为主，搭配后变速使用。

Most systems have three gears on the front, which are controlled by your left shifter.

大多数的变速系统前面会有三片大盘，由您左边的变速杆来控制。

An automatic dipping production line machine equipment mainly comprises a liquid pool, a thermostated container, a curing oven, a heating cabinet, an air heating cabinet, a high pressure air heater., an air cooler, a column, a motor, a gearbox, a sprocket, a guiding wheel a supporting wheel, dual chains, a chain hanging scroll, a dedicated cradle, a vibratory pump, a dead lever, a wind plate and so on.

一种自动浸渍流水线设备，主要由液体池、恒温箱、固化箱、加热箱、空气加热箱、高压热风机、冷风机、立柱、电动机、变速机、链轮、导向轮、托轮、双链条、链条挂轴、专用挂篮、振动泵、固定杆、挡风板等构成，通电后，电动机驱动变速机使链条通过导向轮的定位导向，使待浸渍防潮液的物品的浸液、除余液、固化等工序自动连续完成，挡风板控制着热量的循环利用，具备优质高效、环保节能，是物品防潮浸渍的理想自动化流水线设备。

The shifting drive bearing is a new spe-cial type bearing with supporting function as well as speed change function.

变速传动轴承是一种新型的既具有支承功能又具有变速功能的新型特种轴承。

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