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According to the measured pressure data of the four-stroke small utility gasoline engine, the cyclical variations of the maximum pressure, the crank shaft angle at the maximum pressure, the mean indicated pressure and the largest pressure rise rate were analyzed. Meanwhile, the influences of ignition advance angle, load and rotation speed on cyclical variation were also investigated.

根据实测小型通用四冲程汽油机气缸压力，分析了最大爆发压力、最大爆发压力所对应曲轴转角、平均指示压力以及最大压力升高率等参数的循环波动特性，以及点火提前角、负荷和发动机转速对循环波动的影响。

The speed also affects combustion noise through variation of advance angle.

推迟供油提前角可以显著降低噪声。2、燃烧系统多参数分析2.1、喷孔数目在喷油压力不变时，减少喷油孔数量，可使促进燃油雾化，使着火延迟期缩短，因而有助于降低压力升高比，汽缸压力频谱线也相应降低，尤其是中、高频成分降的更多些。

In this paper, the deformation phenomena revealed by surface excavation and underground galleries were described in detail including variation of the dip angle and rock mass structure.

本文通过细致的野外调查，揭示了一类发育深度较大的大规模倾倒变形破坏。

Movement trajectories of electrons under complex field and state parameters when electrons return to the dielectric surface are obtained by simulation,such as impact energy and return time. Variation laws of electron movement with emergence angle and microwave electromagnetic parameters are also derived. The emergence angle of electron has significant effect on the movement of electron,and there is an emergence angle in which the electron has the maximum trajectory length and impact energy.

研究发现：电子出射角度对其运动状态有显著影响，电子存在运动轨迹最大的某一出射角度，该角度下电子拥有最大的撞击能量；微波电场幅值的增加将使电子撞击能量增加，返回时间减小，微波电场相位的变化使电子的撞击能量和返回时间呈周期振荡，这从本质上解释了电子数量在二次电子倍增过程中以微波频率两倍周期振荡的原因；随着微波频率的增加电子将由简单的类抛物线运动转变为复杂的振荡运动。

Variation laws of electron movement with emergence angle and microwave electromagnetic parameters are also derived. The emergence angle of electron has significant effect on the movement of electron, and there is an emergence angle in which the electron has the maximum trajectory length and impact energy, Impact energy will increase and return time will reduce as increasing the amplitude of electric field, and both parameter would oscillate with the phase of electric field, which can essentially explain that multipactoring electron number oscillates in twice the frequency with the increase of microwave frequency, electron trajectory will change from parabolic-like movement to complex oscillation.

研究发现：电子出射角度对其运动状态有显著影响，电子存在运动轨迹最大的某一出射角度，该角度下电子拥有最大的撞击能量；微波电场幅值的增加将使电子撞击能量增加，返回时间减小，微波电场相位的变化使电子的撞击能量和返回时间呈周期振荡，这从本质上解释了电子数量在二次电子倍增过程中以微波频率两倍周期振荡的原因；随着微波频率的增加电子将由简单的类抛物线运动转变为复杂的振荡运动。

This results show that the variation of projection angle across the field of view will not introduce significant errors.

因此，投影角跨视场的变化在采用本装置进行高度测量时不是关键的。

Thus, the variation of projection angle across the FOV is not critical in height measurement using the setup.

因此，投影角跨视场的变化在采用本装置进行高度测量时不是关键的。

According to dispersion relations, The relations of the incident angle, reflection angle and refraction angle equations with bicrystal parameters and wave vector are obtained respectively. The variation of the reflection angle and refraction angle with the incident angle for certain bicrystal parameters is presented by angle quations.

根据晶体的色散关系解出了入射角、反射角和折射角关于晶体参量及波矢的方程，并根据角度方程给出了在一定参量下反射角和折射角关于入射角变化的关系图，以图示的方法显示了光束在界面处的异常性质。

Equations and boundary conditions for tilt angle and twist angle of director are obtained with variation theory.

通过变分理论得到指向矢倾角和扭曲角满足的方程和边界条件。

The influence of laser central wavelength variation, polarizer angle error, wave plate phase retardance and angle errors on the whole system is analyzed.

分析了激光器中心波长变动、偏振片的角度误差和波片的相位延迟及角度误差对整个系统的影响。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。