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- Ultrasonic wave speed measurement 超声波声速测量
- ultrasonic wave speed 超声波速度
- 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。
- Wave speed equals frequency times wavelength. 波速等于频率乘以波长。
- Ultrasonic wave arm hole machine. 超声波袖笼机。
- Supply ultrasonic wave detector tube. 供应超声波检测管。
- Oxidative desulphurization with hydrogen peroxide as oxidant was emphasized,which used different catalysts,promoters,ultrasonic wave and photocatalysts to speed up the reaction. 重点介绍了以过氧化氢水溶液为氧化剂,采用不同的催化剂、助剂、与超声波或光催化相结合的脱硫效果,比较了不同方法的优缺点。
- X-ray film, ultrasonic wave determination, urinary tract determin... 结论:对腹膜后血肿的早期诊断及救治是提高生存率的关键。
- 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
- 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。
- Cracks can be detected by a method using ultrasonic waves. 疵点可用超声波方法检测。
- Cracks will come out clean when treated by ultrasonic waves. 如果以超声波处理，缝隙就会变得很洁净。
- 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；
- Research on ultrasonic wave extraction of shikimic acid in Illicium verum Hook. F. 八角茴香中莽草酸超声提取工艺研究。
- Numerical control ultrasonic wave washing machine of medical use the international advance Ics, MPCs, safety circuits and digital indicators. 医用数控超声波清洗机采用国际上最先进的集成电路、微处理电器、保护电路及数码显示。
- Research on ultrasonic wave extraction of total flavonoids from fruit marc of Hippophae rhamnoides L. 超声波法提取沙棘果渣中总黄酮的最佳工艺研究。
- 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。
- 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
