查询词典 aberration constant

Intake efficiency is the most fundamental and important parameter for engine performance, yet the open and close timing as well as the lift depth of the intake valves are determined by the contour curve of the camshaft, that means the valve timing and lift depth are constant and fixed.

进气效率，是引擎最基本也是最重要的性能参数之一。而进汽门的开启时间与关闭时间以及扬程的大小是经由凸轮轴的轮廓曲线所决定，亦表示汽门正时与扬程是固定不变的。

The important factors for affecting cotton seed's dielectric constant is discussed by the thesis.

对影响棉花种子介电常数的重要因素进行了详细论述。

To be creative and make constant progress, the main products are: electronic truck scale, electronic scales, waterproof scale, weighing scales, counting scales, Electronic Hanging Scale, Weighing display....

勇于创新、不断进取，主要产品有：电子汽车衡，电子天平、防水秤、计重秤、计数秤、电子吊秤、称重显示器。。。。

The characteristics of the switching curves of Gaussian-Constant-Gaussian varying coupling coefficient nonlinear directional coupler are analyzed in detail.

研究了高斯常数高斯平滑连接的复合型变耦合系数定向耦合器的开关特性曲线。

The stable temperature dependence of resonance frequency, electromechanical coupling coefficient K_(31) and piezoelectric constant d_(31) were measured.

实验结果表明，适量的掺杂不仅能优化体系的压电性能，而且改善了体系的温度稳定性。

Using this method, wide dimming range can be achieved with narrow frequency range and constant DC link voltage. And the lamp current keeps perfect sine wave all the time, which means low lamp current crest factor is obtained. Its validity is verified by simulation and experiment.

本章最后提出了一种基于T型滤波器的新型的调光方法，采用此方法可以在保持逆变器直流母线电压和开关占空比不变的情况下，只需很窄的频率范围就能达到非常宽的调光范围，而且在整个调光范围内灯电流都基本上是完美的正弦波，这就意味着可以始终保持很低的灯电流波峰因数，仿真和实验结果充分验证了它的优点。

The main contents include the kinematic and dynamic characteristics of floating body and concept about large body; the kinematic and dynamic conditions and governing equations for constrained floating body; illumination of simple harmonic by decomposition into diffraction and radiation; introduction of relevant effect forces; the formula of velocity potential in waters with constant depth; the scattering by a vertical cylinder with circular cross section.

简述浮体的运动及动力特征、大尺度物体的概念；受约束浮体的运动学及动力学条件及其控制方程；通过分解为绕射和辐射问题讲解简谐运动及有关的作用力；等水深地形上速度势的表达式；铅垂圆柱产生的散射。

That is, for every circle the cross-ratio of its four intersection points with neighboring circles is equal to a negative constant.

给出交比为负常数的SG圆模式的定义，即其中每一个圆与它相邻圆的四个交点的交比等于一个给定的负常数。

The section of traditional portal rigid frame are constant cross-section and wedge shape variable cross-section,this paper brings up a component cross-section—ripple web plate variable cross-section.

传统的门式刚架的构件截面为等截面和楔形变截面，本论文提出了一种构件截面形式——波纹腹板变截面。

The section of traditional portal rigid frame are constant cross-section and wedge shape variable cross-section,this paper brings up a component cross-section—ripple web plate variable cross-section.

摘要传统的门式刚架的构件截面为等截面和楔形变截面，本论文提出了一种构件截面形式——波纹腹板变截面。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼