速度

With proper atomic coherence, the performance has the following advantages compared with that of the velocity selection of the ultracold two-level atoms by the micromaser: high resonant transmitted efficiency, low unresonant transmitted efficiency, and large velocity selection scale. The second part includes the fifth chapter.

原子透射几率只受到一种量子干涉效应的影响，其来源为V型的两个跃迁通道，因此Micromaser对入射超冷V型三能级原子束速度的选择性能深深地受到原子相干性的影响，我们发现选取适当的原子相干参数以及其它参数，速度选择性能可以达到很理想的状态：共振原子透射效率高、透射原子束的速度纯度好、速度选择范围大。

In addition, the definition of characteristic air velocity is presented and the relationship between meteorological parameter and air inlet flow field at unwindy weather are discussed.

除了在180°的背风面区域附近，进风口各点的进风速度与侧风速度为二次多项式关系；而在180°的背风面区域附近，进风速度与侧风速度为Gauss分布关系。

The second part of this paper presents a CFD-simulation of the performance of straight-walled and curved-walled micro nozzle/diffuser by FLUENT software. Such nozzle/diffusers are mainly used in micro venturi and also applied to valveless micropumps.

而在速度分布部分，当流量为5.338 mg/min时，宽度为150微米的喉部区流速已经高於声速，随后因速度不断增加，空气黏滞力影响了速度分布而产生了速度冲击现象。

The collision term is two bi-velocity non-dimensionalized reduced ngle tri-velocity model equation is transformed into a bi- h integrating weightedly the non-dimensionalized model equation about the third component of molecule velocity.

采用BGK模型和Shakov模型近似碰撞项，进而引入两个二速度无量纲简化分布函数，通过关于分子速度第三分量取矩积分，将三速度单一模型方程变换为二速度微分方程组。

First, the grain will be increase at double speed, second, a large scale "structure" builds by collision and coalescence of favorably oriented particles (namely primary phase coalescence), third, primary phase entraps the eutectic structure.

分别研究了浇注温度、拉坯速度、冷却速度等工艺参数对合金组织的影响，结果显示：在本实验条件下，浇注温度以650荀70'℃为宜；拉坯速度以8.4一9.6 cm/min为宜；二次水冷流量控制在1.0一2.0比为宜。综合考虑磁场强度B和冷却速度对非树枝晶组织初生相平均尺寸D和形状因子S影响的数学表达式为：D=A一ns二；。

At the end of 1990抯, the growth of international capital抯 circulation has greatly overstepped that of world trade which also has surpassed the growth of world economy.

二十世纪九十年代末，国际贸易的增长速度超过了世界经济的发展速度，而国际资本的流动速度比国际贸易的增长速度还要快。

Through setting independent monitoring and control unit of traveling, hoisting traveling and speed setting are guaranteed accurately. Through optimized control of speed, damage is reduced for hoisting rope by impact of driving current. Through continual and fixed-point monitoring and control for speed, high reliability of speed protection is realized. Through control of optimizing loading and unloading process, overwinding accident caused by wrong loading fault is prevented.

通过设立独立的行程监控单元，确保提升行程和速度给定准确无误；通过速度的优化控制，减轻驱动电流冲击对提升绳的损伤；通过连续和定点相结合的速度监控，实现速度保护的高可靠性；通过优化装卸载工艺控制，预防错误装载故障导致的过卷事故。

Finally, he air velocity, the velocity of the wood particle, the relative velocity between the air and the wood particle, the wood particle's residence time and the variations of the particle's velocity along radial and circle are measured. The ISD of particles is analyzed on dynamics.

最后，测量了气流速度、刨花速度、刨花与气流间的相对速度、刨花在半环内的停留时间及刨花在半环内沿径向和周向的速度分布，并地基础上进行了刨花对撞流干燥的动力学分析。

Finally, the air velocity, the velocity of the wood particle, the relative velocity between the air and the wood particle, the wood particle's residence time and the variations of the particle's velocity along radial and circle are measured.

最后，测量了气流速度、刨花速度、刨花与气流间的相对速度、刨花在半环内的停留时间及刨花在半环内沿径向和周向的速度分布，并在实验基础上进行了刨花对撞流干燥的动力学分析。

Finally,the air velocity,the velocity of the wood particle, the relative velocity between the air and the wood particle,the wood particle's residence time and the variations of the particle's velocity along radial and circle are measured. The ISD of particles is analyzed on dynamics.

最后，测量了气流速度、刨花速度、刨花与气流间的相对速度、刨花在半环内的停留时间及刨花在半环内沿径向和周向的速度分布，并地基础上进行了刨花对撞流干燥的动力学分析。

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％。