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- Wave speed equals frequency times wavelength. 波速等于频率乘以波长。
- By sweeping a laser along the pipe to change the local wave speed, physicists might be able to create a horizon. 将雷射沿著管路扫过，可以改变局部的波速，运用这种方式，物理学家也许可以创造出视界来。
- The the-oretical and practical significance of the"wave speed theory of flow limitation"proposed by Dawson is preliminarilyidentified by these facts. 这一事实也初步验证Dawson等提出的“流量限制的波速学说”的理论和实用意义。
- The weathering of rock are zoned in terms of the ratio of wave speed, integrality index of rock mass and rock quality index. 运用岩体波速比、岩体的完整性系数、岩石质量指标分别对岩体风化进行了分带；
- Aimed at the characteristic of discreteness of the coal sample, pulse-penetrating method is used to measure the acoustic wave speed and the strength test is finished on MTS815. 采用超声脉冲穿透法测量煤样波速并进行岩石力学试验,回归分析得出了煤岩试件声速与其力学参数之间的关系式,为尽可能避免因煤样离散性而带来的盲目试验提供了一条技术途径。
- The results of drilling tests proves that the remaining compressive strength, electromagnetic wave speed, and the covered area of electromagnetic wave amplitude are related. 实验最后以钻心试验印证了，混凝土火害后残馀强度与电磁波波速以及电磁波其振幅包覆之面积是有相关连的。
- By theoretical analysis of several electronic wave spee d, it is concluded that the electronic wave speed is virtually the information sp eed to build up the timespace image of electron. 通过对几种电子波波速的理论分析，得出电子波波速实质上是电子建立时空形象的信息速度。
- Analyses results show that the materials, tension and rigidity of wires, speed of trains, wave speed, and lift forces are primary factors that affect fatigue life of contact wires. 分析结果表明，接触导线线质、张力和刚度以及列车运行速度、波动传播速度和抬升力是影响导线疲劳可靠性的主要因素。
- Finally the effects of the roughness and flatness of specimen on the surface wave speed are carefully analyzed, and the methods for resolving the problem are verified by the experiment. 同时分析了试件表面粗糙度和平整度对表面波速度变化的影响，最后给出了金属材料在不同表面条件下的实验分析结果。
- By theoretical analysis of several electronic wave spee d,it is concluded that the electronic wave speed is virtually the information sp eed to build up the timespace image of electron. 通过对几种电子波波速的理论分析，得出电子波波速实质上是电子建立时空形象的信息速度。
- The calculation method of primary wave and second wave speed were studied when the oil saturation and effective pressure of unconsolidated sandstone reservoir with high porosity in X Oilfield changed. 研究了X油田高孔低胶结砂岩储层在含油饱和度和压力变化时纵、横波速度计算方法,并将计算数据与实际测井资料进行了对比。
- Around the periphery of the disk, a shock front or wall of water forms;outside the shock front, the water moves slower than the local wave speed (analogous to the subsonic interstellar medium). 在浅盘的周围，形成激波前缘或水墙，在激波前缘之外，水的运动速度低于该处的波速（类似于次音速的星际介质）。
- But as the waves enter shallow waters, friction with the ocean floor lowers the waves' speed and raises their height... 但随着这些波浪进入浅水区，与海底的摩擦降低了波浪的速度但提高了它们的高度...
- We deal with the case the wave speeds are same.We prove the blowup and lifespan by fixed characteristic method. 这一章我们用固定特征线的方法证明波速相同时半线性波动方程组Cauchy 题的经典解的破裂，并给出解在破裂时生命跨度的上界估计。
- No horse has a speed comparable to that of his. 没有一匹马的速度能比得上他的马。
- Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。
- That's all there is to make a speed dial call. 在那里全部要进行快速拨号呼叫。
- Radio2 can be heard on the long wave band. 第二广播电台可在长波段收听到。
- The great virtue of air travel is speed. 乘飞机旅行的最大优点是速度快。
- I am able to pick you up on the short wave radio. 我能用短波收音机收听到你的信号。
