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- The design principle,circuit analysis,and transducer construction of the low frequency ultrasonic tester are described.The applications to testing concretes and rocks are discussed. 本文叙述了低频超声波检测仪的设计原理;电路分析;换能器结构并讨论了在混凝土;岩体中应用.
- Low Frequency Ultrasonic Method for Characterizing Ultra-Thin Bi-Layer Composite 超薄双层胶结复合结构低频超声类兰姆波定征方法
- Low Frequency Ultrasonic Rayleigh-like Wave Method for Characterization of the Ultra-thin Coating Layer 超薄覆层低频超声类瑞利波定征方法
- STUDY ON THE BERBERINE COMPONENT YIELD OF LOW FREQUENCY ULTRASONIC EXTRACTION BY USING SPECIFIC CONDUCTANCE 用电导率法研究低频超声提取小檗碱成分的产额
- LOW FREQUENCY ULTRASONIC MULTI-MODE LAMB-LIKE WAVE METHOD FOR THE CHARACTERIZATION OF THE BONDING LAYER IN ULTRA-THIN ADHESIVE COMPOSITES 胶结复合结构超薄胶结层低频超声类兰姆波定征方法
- 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。
- In electronics, undesirable low frequency currents interfering with a desired signal, and usually caused by a poorly screened alternating mains supply. 在电子学领域，一种不希望发生的低频电流，它干扰所要求的信号。通常这种现象是由于交流供电线路屏蔽不良引起的。
- Keywords theoretic model;low frequency ultrasonically induced polarization;electromagnetic wave field;saturated fluid;isotropy;full wave train; 理论模型;低频声激发极化;电磁波场;饱和流体;各向同性;全波列;
- The abnormal colours of seedlings turned a low frequency. 颜色异常的苗木出现频率较低。
- Laser direct writing of micro-OVD with low frequency templates[J]. 引用该论文 魏国军;周小红;周雷;陈林森.
- Conclusion： The high frequency ultrasonic wave scan is a useful method in diagnosing mucocele of the appendix . 结论：高频超声是阑尾粘液囊肿术前诊断及与其他病变鉴别的重要检查手段。
- Radio frequency ultrasonic technique for metal brazed high-density honeycomb structures and de-fect recognition are described. 利用射频超声技术检测大密度金属钎焊蜂窝构件及缺陷识别技术。
- This effect is obvious at lower frequency band. 这种效应在振动低频区段更为显著。
- If it is a low frequency sound, it is processed as an analog signal. 对低频声进行传统的处理。
- As we have learned, breed of this kind of software is various, the principle of place introduction is to use high frequency ultrasonic to come drive midge. 据了解，这类软件品种繁多，所介绍的原理都是用高频超声波来驱蚊。
- Abstract: The ultrasonic contrast agents （UCA） may be used in tumor therapy when UCA is irradiated by a low frequency ultrasound based on bubble cavitation and other nonlinear effects. 文章摘要: 低频超声联合微泡造影剂有可能用于治疗肿瘤，因此开展造影剂低频的动力学特性研究是十分重要的。
- The direction of the low frequency current with maximum frequency was also WSW. 低频流出现频率最多的方向和潮流基本一致。
- Medium SMES (200 MVA) are able to compensate some low frequency disturbance. 中型SMES(200MVA),这类SMES能补偿某些低频度的扰动
- Helmholtz resonator has a good noise eliminating performance at low frequency. 亥姆赫兹共振腔具有良好的低频消声性能,被广泛地应用于低频消声方面。
- Armstrong was forced to use avery low frequency barely above audibility. 当时这样的频率被认为是“高频”，但只不过是现在所用调幅波段的底部而已。
