Eddy current, magnetic leak, magnetic particle and ultrasonic test are the main methods used for pumping rod test.

目前，对抽油杆的自动探伤主要有涡流、漏磁、磁粉及超声方法，各有其优缺点及适用范围。

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As there is no unified standards of failure for the soil float resisting anchor rod test, the parameters of pulling-resistance are discrete, which often led to incorrect design.

因抗浮锚杆试验没有统一的破坏标准，测出的抗拔参数差异大，不能正确指导设计。

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As there is no unified standards of failure for the soil float resisting anchor rod test, the parameters of pulling-resistance are discrete, which often led to incorrect design.

因抗浮锚杆试验没有统一的破坏标准，测出的抗拔参数差异大，不能正确指导设计。

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