查询词典 fluctuation

Involute gear ; friction coefficient between teeth ; tooth number ; driven gear ; output torque ; fluctuation ratio

渐开线齿轮；齿间摩擦系数；齿数；从动轮；输出扭矩；波动率

Based on the theory of Economic fluctuation, we focus on the effects taken by EF to FS in our country.

本文立足经济波动理论，研究我国经济波动对金融稳定可能造成的影响。

Using the time-gain compensation technique to compensate for ultrasonic wave's weaking when transmitting in the air,and reduce the fluctuation of echo signal.The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

和其他方法相比，如激光测距、微波测距等，由于声波在空气中传播速度远远小于光线和无线电波的传播速度，对于时间测量精度的要求远小于激光测距、微波测距等系统，因而超声波测距系统电路易实现、结构简单和造价低，且超声波在传播过程中不受烟雾、空气能见度等因素的影响，在各种场合均得到广泛应用。

The vibration of gear case is further calculated with the excitation oweing to the fluctuation of gear load.

以齿面动载作为激励，本文进一步研究了齿轮箱壳的振动响应。

Gear pump in the outlet of the pressure fluctuation can be controlled within 1%.

在齿轮泵出口处的压力脉动可以控制在1％以内。

Our series GF generating set consisting of series 190 diesel engine developed jointly by Jinan Diesel Engine Works and AV、L Austris, series 1FC6 LIUZHOU--SIEMENS generator, control panel, shaft coupling and common base,is noted for its excellent performance, high reliability, slight fluctuation, stable voltage output as well as being easy to operate and maintain.

本系列机组由济南柴油机厂和奥地利索斯特内燃机测试设备公司共同研究开发的190系列柴油机、柳州——西门子1FC6系列无刷同步发电机、控制屏、联轴器及公共底座等主要配套部分组成，具有电压稳定、波动率小、可靠性高、使用维护方便等特点。

In Chapter 4, the pricing of Asian geometric average option under stochastic interest rates is studied, assuming CIR model for the interest rates. Asian option is strongly dependent with path, usually have a long duration, the movement of interest rates becomes more important in pricing such long-dated options. The CIR interest rate model not only considered the interest rate behavior has mean-reverting but also take into account that the fluctuation rate is direct proportion with the square root of its interest rate. Finally, the method of finite difference for the Asian geometric average option under CIR interest rate model is given.

第四章在利率满足CIR利率模型的假设下，研究了几何亚式期权的定价公式，亚式期权是强路经依赖性期权，通常有效期较长，在进行较长时期的投资时，利率的变化是非常重要的，CIR利率模型不仅考虑了利率行为具有均数回归的现象，而且还考虑其波动性的大小与利率大小的平方根成正比，最后给出了CIR利率模型下的几何亚式期权定价的有限差分法。

The climatic fluctuation after the Quaternary Glacial Epoch and the frequent human activities caused further decline of the fragmented population in small scale.

第四纪冰川时期，强烈的气候变迁，造成银杉种群的大尺度减少，并导致其间断分布于我国亚热带山地；冰后期以来的气候波动及近代剧烈的人类活动使已经片断化的银杉种群数量进一步下降。

West Riggs of president of Piper Jaffray of American investment firm is in now expressed on Chinese investment annual meeting 2008, economy can have very big fluctuation before stability, at present the market such as need is stabilized first come down, but the darkness that has been goosefoot a kind of green tea picked before Pure Brightness.

West Riggs今日在2008年中国投资年会上表示，经济在稳定之前都会有很大波动性，目前需要等市场先稳定下来，但已经是黎明前的黑暗。

In 1973, Edward Tryon proposed that the Universe may be a large scale quantum mechanical vacuum fluctuation where positive mass-energy is balanced by negative gravitational potential energy.

在1973年，Edward Tryon 提出一个假设，宇宙可以是一大尺度的量子力学的真空涨落，这里正的质能是由负的引力势能所平衡。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。