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- This paper introduces application of piezoelectric ceramic to sound vlocity measuring as well as several methods to measure the velocity of ultrasonic wave in various mediums. 本文论述了压电陶瓷在声速测量中的应用,阐述了几种测量超声波波速的方法。
- Design of ultrasonic wave guide device. 超声波导盲器的设计。
- New Products of Ultrasonic Wave Technology. 超声波技术新产品。短句来源。
- velocity of ultrasonic wave 声速
- METHODS By the means of viscometry, the effects of reaction time, chitosan and acetic acid concentration on the hydrolytic velocity of chitosan by ultrasonic wave were investigated. 方法在稀醋酸溶液中,超声波的辐射作用下使壳聚糖发生降解。采用粘度测定法,探讨了超声波辐射时间与壳聚糖粘度的关系以及壳聚糖的浓度、醋酸的浓度对降解速度的影响。
- Till now, the testing method for the elastic wave velocity of rock specimens with ultrasonic waves is basically the travel time testing method. 迄今为止,岩石样品弹性波速的超声波测试基本上是采用波动走时的测定方法。
- Research on Conditions of Ultrasonic Wave Disruption of Two Lactobacillus sp. 嗜酸乳杆菌；保加利亚乳杆菌；亚油酸异构酶；超声波破碎；条件
- Trifolium pratense isoflavone was extracted with the technique of ultrasonic wave. 对利用超声波提取红三叶异黄酮的工艺进行了研究。
- The penetrating capability of ultrasonic wave in viscoelastic medium was improved by using low frequency transducers. 采用研制的低频组合探头,提高了声波在粘弹介质中的穿透能力。
- Objective:To observe the preventive and therapeutic effects of ultrasonic wave treatment on faciocervical scar. 目的:探讨超声波对面颈部瘢痕的处理效果。
- Lashing velocity of pump is concerned with nature of air. 泵的抽气速率与气体的性质有关。
- The influence of ultrasonic wave on the phosphorite acid decomposition was studied. 讨论了超声的声强、时间、温度对磷矿酸解的影响。
- The hare darted off with the velocity of a bird. 野兔像鸟一样快速掠去。
- Objective: To observe the preventive and therapeutic effects of ultrasonic wave treatment on faciocervical scar. 目的：探讨超声波对面颈部瘢痕的处理效果。
- Finally it forecasts the development application prospect of ultrasonic wave technology in automobile sensor production realm. 最后展望了超声波技术在汽车传感器生产领域的发展应用前景。
- The optimum process was as follow: the extraction time 30? min, corn cob concentration 3.23%, power of ultrasonic wave 280? W, and the temperature 60? 并通过正交实验确定了提取过程的最优条件时间30min;原料质量分数3.;23%25;功率280W;温度60℃。
- The velocity of light is about 186,000 miles per second. 光速大约是每秒十八万六千英里。
- An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain. 超声波心动描记器一种用来显示详细的大脑图象的仪器，利用超声波发送和反射的差异来测试并无伤无痛
- ObjectiveTo evaluate the diagnosis value of ultrasound on Achilles's tendon damages,and to analyze the effect of ultrasonic wave and wax therapy on it. 目的评价超声诊断跟腱损伤的价值，并分析超声波和蜡疗对其治疗作用。
- The hare dart off with the velocity of a bird. 野兔像鸟一样快速掠去。
