A typical signal was found in the position of welding scar of a liquefied petroleum gas (LPG) tank by metal magnetic memory testing (MMMT).

采用磁记忆检测发现液化石油气储罐焊疤部位存在较强的磁记忆信号。

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Secondly, on this basis, have proposed the road testing program of the urban passenger train of liquefied petroleum gas, research and analyse the road test of transforming the vehicle.

其次，在此基础上，提出了液化石油气城市客车的道路试验方案，并进行了改造车辆的道路试验研究分析。

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Well-testing exploration is the last step of discovering and verifying oil and gas in petroleum and natural gas exploration, following the seismic exploration, well locating, and logging-analysis.

试油勘探是石油和天然气勘探中，继地震勘探和井位研究部署、钻井勘探、测井分析完成后，进行油气层验证及油气发现的最后一个环节。

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