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- F. B. Jensen and W. A. Kuperman, “Optimum frequency of propagation in shallow water environments,” J. Acoust. Soc. Am., 73(3), pp. 813-819, 1983. 陈仪清、陈民本,国科会国防科技学术合作协调小组委讬计画研究成果:台湾西南海域海床表层沈积构造与声学特性图集,国立台湾大学海洋研究所,民86年(1997)。
- The bouncing overall power is nearly maximized at the optimum frequency ratio of the minimum pitching overall power.The higher rear-frequency and The higher rear-damping ratio reduce pitching motion. 跳动总功率在最小俯仰总功率的最佳频率比时,几乎达到最大值,较高的后频和较高的阻尼比减少了俯仰运动。
- Wu S C. Optimum frequencies a passive microwave radiometer for trpospheric pathlength correction IEEE, Ap 1979, 27(2). 谢益溪等.;电波传播--超短波;微波;毫米波
- The Optimum Frequency Selection for Air Surveillance Radar 对空情报雷达的频率优选
- Keywords Reynols number;Radiation pressure;Optimum frequency; 雷诺耳数;辐射压力;最佳频率;
- The market offer optimum condition for sale. 市场为销售提供了最佳条件。
- Most favorable or desirable; optimum. 最理想的最适宜的,最令人满意的,最优的
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位,等于每秒一周
- Our main detection device is sonar. 我们主要的探测装置是声波定位仪。
- I'm getting a strong response on the sonar. 我在声纳上测得强力反应。
- Experiment on optimum frequency of microwave signal source for detecting fiberglass reinforced plastic sucker rod 玻璃钢抽油杆微波检测信号源最佳频率实验
- The whales need sonar to find food. 而鲸鱼就是靠这种能力来寻找食物的。
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- We sat listening to the chat-chat-chatof the sonar. 我们坐下来听声纳的嚓嚓嚓声。
- Cavitation is noisy and easily detected by sonar. 空泡现象是有噪声的并且容易被声纳探测到。
- Sub collides with US destroyer's sonar. 中国潜艇与美驱逐舰声纳相撞。
- We picked up two submarines on sonar. 我们用声波定位仪观察到两条潜水艇。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- The answer is that they use echolocation or sonar. 答案是:它们用回声定位或者说声纳系统。