查询词典 muzzle velocity

The other important observation we need to make about spiral galaxies is that galaxies do not rotate rigidly (with a constant angular velocity), but to a good approximation each region rotates with the same tangential velocity.

另一个重要的观察，我们需要作出关于螺旋星系是宇宙不旋转严格，但有一个良好的逼近各地区轮流担任相同的切向速度。

The first process is to optimize the geometric parameters of the press, on the assumption that the servomotor rotates at a constant angular velocity equal to that of the constant velocity motor. The second process is to optimize the displacement trajectory of the servomotor based on the results of the first process while keeping the geometric parameter unchangeable.

然后，建立了混合驱动压力机的优化设计模型，并将优化分为两步：第一步，假定伺服电机角速度与常规电机相同的条件下，优化设计出压力机的尺寸参数；第二步，在第一步优化结果的基础上，使机构的尺寸参数不变，优化设计伺服输入运动规律。

Constant Angular Velocity mode and Constant Linear Velocity mode are integrated to build a single spindle motor control module to incorporate with long-seek servo. CAV mode and CLV mode are performed to show its feasibility. The experiment results showed that the pick-up-head can perform arbitrarily track-jump command, quite well.

此外，在主轴马达伺服部分，提出以跨轨旗标讯号来决定使用『碰-碰』控制法则让主轴马达转速变化的执行时间，也将主轴马达伺服中的等角速度控制模组与等线速度控制模组整合成功，形成单一的主轴马达控制模组，使与长寻轨伺服结合而更易於操作，让不论内、外寻轨的任意跨轨命令皆可以达成定线速度或是等角速度的控制目标。

By means of study on velocity field constant in flue,a method used to measure average velocity of flue gas was presented.

通过对烟道"速度场常数"的研究，提出了利用速度场常数监测烟道烟气平均流速的方法，同时研制出速度场常数自动检测装置。

The extracted P-wave is reverse-time extrapolated and imaged with a P-velocity model using a finite difference solution of the scalar wave equation, the extracted S-wave is reverse-time extrapolated and imaged similarly, but with an S-velocity model, and converted S-wave data requires a polarity correction prior to migration to ensure constructive interference between data from adjacent source.

在模型中，每个网格点的纵、横波成像时间，为震源到该网格点的纵波初至时间。利用纵波速度模型和声波传播方程的有限差分解，对反射纵波进行逆时延拓和成像，利用横波速度模型和声波传播方程的有限差分解，对转换横波进行逆时延拓和成像，并在偏移前进行极性校正。

In these boundaries, the contravariant velocity components normal to the boundary are constrained by mass conservation, and for other velocity components and turbulent quantities, the second derivatives are set to zero.

在这些界限， contravariant速度组分正常对界限由许多保护压抑，并且为其他速度组分和动荡数量，第二种衍生物调整到零。

In the present ap-proach, the Cartesian components of the velocity are kept as the dependent variables, since the choice of the covariant or the contravariant velocity components would lead to a much more complex set of equations.

在当前方法，因为协变量的选择或contravariant速度组分将导致等式，复杂的形势速度的解析的组分被保留作为因变量。

Bradley explained this effect in the context of Newton's corpuscular theory of light, by showing that the aberration angle was given by simple vector addition of the Earth's orbital velocity and the velocity of the corpuscles of light (just as vertically falling raindrops strike a moving object at an angle).

布拉德利解释这种效应的背景下，牛顿corpusculartheoryoflight，经表明像差角度作了简单的载体，增加了地球的轨道速度与速度段体轻(就像垂直下落雨滴罢工运动物体的夹角)。

The mean and turbulence characteristics of velocity fields of turbulent round jets at different velocity ratios in counterflow and coflow ambient are investigated thoroughly.

全面研究了不同射流流速比下反向流动和同向流动环境水体中紊动圆射流流速场的时均特性和紊动特性，分析了流速比对射流特征参数的影响。

Grasp how to calculation of gas velocity, critical velocity and flow rate.

掌握喷管中气体流速、流量的计算，会进行喷管外形的选择和尺寸的计算。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"