| 1. | Standard practice for ultrasonic pulse - echo straight - beam examination by the contact method
用接触法做超声脉冲回波纵波检验 |
| 2. | Application of the pulsed ultrasound plane monitor method in concrete damage detection
超声脉冲平测法在混凝土工程检测中的应用 |
| 3. | Standard practice for measuring thickness by manual ultrasonic pulse - echo contact method
用人工超声脉冲回波接触法测量厚度的标准实施规程 |
| 4. | Testing method for ultrasonic pulse echo technique of carbon fibre reinforced plastic panels
碳纤维增强塑料板的超声脉冲回波技术的试验方法 |
| 5. | Design of double ultrasound pulse transmitting and receiving circuits used in ultrasound thermometry
一种用于超声测温的双超声脉冲发射接收电路的设计 |
| 6. | Method for assessing the overall performance characteristics of ultrasonic pulse echo testing instrument
评定超声脉冲回波检验仪综合性能特征的试验方法 |
| 7. | Standard practice for measuring the change in length of fasteners using the ultrasonic pulse - echo technique
使用超声脉冲回波技术测量紧固件长度变化的标准操作规程 |
| 8. | Through the spread time of ultrasonic signal is processed by digital correlation method , measuring the velocity of ultrasonic speedily and accurately is achieved
利用超声脉冲回波法在温度箱内测定了某合金材料在20 ~ 60的弹性常数，研究了温度对该材料弹性模量的影响。 |
| 9. | The wavelet ' s characteristic of focus " varieties make wavelet better analyses ability in the time field and the frequency field . it is a perfect method of analyzing non - steady signal , and it is fit to analysis ultrasonic pulse echo signal
而小波的“变焦距”特性使得小波分析在时域和频域中都具有良好的分析能力，是一种理想的分析非稳态信号的途径，适于对超声脉冲回波信号的分析。 |
| 10. | So it is essential to diminish the errors and enhance its anti - jamming ability . an innovative method of measuring pipeline thickness based on power spectral evaluation computing has been put forward . besides , experiments on the on - line measurement have yielded good results , proving the veracity and reliability of the measurement
介绍了为减小系统的测量误差、提高系统抗干扰能力而进行的对超声波回波信号的分析研究工作，创新地提出了一种基于对超声脉冲多次反射回波功率谱估计的超声测厚方法，并通过实验证明了该方法用于在线检测的准确性与可靠性。 |
