查询词典 velocity ratio

The numerical results show that lossy dielectric-load can heighten the start oscillation current of absolute instability, and increase depends on the magnetic field strength and the perpendicular-to-parallel velocity ratio of the electrons; The thickness of the lossy waveguide increases the start oscillation length of backward wave oscillation.

结果表明：损耗介质的加载，可以提高绝对不稳定性起振电流，提高的幅度依赖于工作磁场偏离饱和磁场的程度、电子束横纵速度比等；增加波导损耗介质加载的厚度，可以提高竞争模式的回旋返波起振长度。

Start-oscillation current will be down by absolute instability of TE02 and TE01 modes and electron velocity ratio and interaction section, it can be suppressed by the distributed wall losses.

模拟结果显示，TE02、TE01模式绝对不稳定的引发使得原有操作电流降低，其起振电流明显受电子速率比、作用段长度的影响，但此模式可藉由损耗来抑制，此结论与线性理论结果一致。

The results show that an electron efficiency over 27% is predicted for suitable dimensions for the complex cavity and magnetic field coefficient and current and the velocity ratio of the electron beam.

标 签 3 mm波段二次谐波回旋管复合腔多模注波互作用 3mm band Second-harmonic Gyrotron Complex cavity Multiple mode interacting with an electron beam

The involute tooth shape is one that results in a constant velocity ratio, and is the most commonly used of such shapes today.

渐开线状的齿就可以提供恒定的速度比，它也是目前最常用的齿轮形状之一。

Constant velocity ratio may also be desirable for precision in instrumentation gearing, clocks and watches.

恒定的速度可以满足如钟，表内装置的精度。

Speed reducer ; design ; epicyclic friction pulley ; velocity ratio

减速器；设计；行星摩擦轮；速比

This paper made an improvement and development on the traditional graphic solution method for designing planar crank-rocker mechanism in accordance with travel velocity-ratio coefficient K .

对传统的按行程速比系数K设计平面曲柄摇杆机构的图解法做了改进，使该法在解决带有辅助条件的设计问题时更为简捷。

By measuring the velocities of the P-wave and S-wave in three orthotropic directions including parallel and vertical directions to the stratum of the rock samples for slate, phyllite, mylonite and metasandstone, and based on the wave velocities of other rocks from the relevant studies, the anisotropic effect of wave velocity ratio of the P-wave and S-wave for most rocks is put forward.

通过对板岩、千枚岩、糜棱岩和变质砂岩等4种各向异性岩石在平行和垂直层理或板理的3个正交方向上进行大量的纵、横波波速试验，并结合对相关文献中己有岩石波速数据的深入分析，提出岩石介质纵、横波波速比的各向异性效应。这种效应广泛存在，其发育程度受到岩石类别的控制。

Then, according to chooses electrical machinery's synchronous speed and the milling speed determines the velocity ratio, and realizes with the gear drive system.

然后，根据所选电机的同步转速和铣削速度来确定传动比，并用齿轮传动系统来实现。

Non zero offset VSP ; converted SV waves ; compressional versus shear wave velocity ratio ; Poisson's ratio

非零偏VSP ；转换SV波；纵、横波速度比；泊松比

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。