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| 11. | The principles used in measuring sound velocity by means of resonant interference and phase comparison |
| 为了方便教学,对用共振干涉法和相位比较法测定超声声速的原理进行了剖析、比. |
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| 12. | The velocity in Hubble's law is a recession velocity caused by the expansion of space, not a motion through |
| 而哈伯定律中所谓的速度，是由空间膨胀所导致的远离速度，并不是在空间中的运动。 |
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| 13. | This paper derives a set of differential equations which mustbe satisfied by the velocity elevation angle |
| 本文导出探空火箭速度方向角(俯仰角)和方位角(偏航角)满足的一组微分方程,并在一些近似假定下分析了风对探空火箭飞行弹道的影响。 |
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| 14. | reaction-propulsion engine to propel rockets in space; a stream of positive ions is accelerated to a high velocity |
| 推进火箭进入太空的一种反冲力发动机；在电域中正离子作加速运动。 |
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| 15. | The tab contains a toothed wheel which is driven at a high angular velocity by the impinging airstreams |
| 舵片上有一个带齿的轮，这个轮受到气流的冲击而高速转动。 |
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| 16. | neighboring interventricular septum branch extending to melting area were seen in 3 patients accompanied by |
| 术后 5例左心室流出道压力阶差出现反弹 ,3例可见邻近的间隔支向消融区域延伸、血流速度增快 ,1例发现消融血管残端明显延长。 |
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| 17. | A relatively short cannon that delivers shells at a medium muzzle velocity, usually by a high trajectory |
| 榴弹炮一种相对较短的大炮，通常以较高的弹道和中等初速度发射炮弹 |
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| 18. | "Most spacecraft are not self-propelled; they are accelerated to the necessary high velocity by 2-staged |
| 多数航天器不是自我驱动的,通常依靠两级火箭来加速到必要的高速度,而两级火箭在油料用光后便投弃掉。 |
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| 19. | the constant maximum velocity reached by a body falling through the atmosphere under the attraction of |
| 在引力下物体穿越大气的最快速度。 |
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| 20. | by Dongfang Boiler Factory is shorter, at the time the measurement of air flow is being carried out by |
| 摘要东方锅炉厂制造的600MW超临界机组锅炉二次风道的直管段较短，采用均速管流量计进行风量测量时，达不道精度要求。 |
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