| 1. | Nondestructive testing of concrete structures using impact - echo method
冲击回波法检测混凝土结构 |
| 2. | Currently , echo methods are defined for the following data types
目前，回送方法是为下列数据类型定义的： |
| 3. | Application of low - strain echo method to examining integrality of pour - pile
低应变反射法检测灌注桩完整性 |
| 4. | Which does exactly the same job as the echo method used above
还可以更改变量，它所做的工作与上面所用的echo方法完全一样。 |
| 5. | Multiple echo method
多次反射法 |
| 6. | Standard test method for measuring the p - wave speed and the thickness of concrete plates using the impact - echo method
用冲击回声法测量p波速度和混凝土板的厚度的标准试验方法 |
| 7. | Two kinds of methods were used : acoustic impedance inversion ( all ) method and statistical characters extraction ( sce ) of sound echo method
主要研究了反演底质声学参数和统计特征量两种方法。 |
| 8. | The elastic modulus of a special alloy material are measured by the ultrasonic pulse - echo method , when the temperature is changed from - 20 ~ 60
为实现超声声速的快速、精确测量应用数字相关法精确确定超声信号的传播时间。 |
| 9. | Explain the characteristics of piezoelectric crystals and the factors relating to the resonant frequencies of a piezoelectric crystal , and the procedure of the pulse - echo method
说明压电晶体的特性和与压电晶体的共振频率有关的因数，以及脉波回波法的过程。 |
| 10. | Each of such bodies as tunnel lining , road way and road surface floorslab has only one inspection face , and the shock echo method has become a new technique for detecting thickness and defects
摘要隧道衬砌、路道、路面楼板等只有一个检测面，冲击回波法成为新的厚度及缺陷检测方法。 |
