Based on field investigation the main causes of No 2 ore pass failure are analysed in this paper.

本文通过详细的现场调研，分析了造成2号溜井垮冒的主要原因。

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Based on field investigation, tests, and indoor wind tunnel experiment, the mechanism of soil erosion by wind on sandy land is analyzed.

通过典型样地调查和室内风洞试验，分析了该区沙地土壤风蚀机理。

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The coiled tubing fault tree is constructed based on field investigation and relevant literature by use of the fault tree analysis theory.

结合现场调研和有关文献资料，根据故障树分析理论，用演绎法建立了连续油管的故障树。

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The report is based on a field investigation in the towns of Taftanaz, Saraqeb, Sarmeen, Kelly, and Hazano in Idlib governorate.

CNN: Rights group: 'Annan plan has been ineffective'