How to make classify and recognize echo signal of ultrasonic detection takes information of interface bonding quality is the key and difficulty of ultrasonic detection of thin composite materials.
如何对反映粘接质量的超声检测回波信号进行分类识别，是薄板复合材料超声检测的关键也是难点之一。
Bonding quality testing of the second interface of well cementation is a difficult problem in oil log-ging.
检测第二界面的固井质量是当今石油测井中的一项技术难题。
An evaluation method was established from three parts as oil-water interface changing, washing fluid rheology and bonding quality.
并从改变油水界面润湿性能力、清洗液流变性、胶结面质量三个方面对清洗液的评价方法做了初步的探讨。
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