报告认为，空气品质，矿物、电力设施以及石油勘探造成的污染是印度，墨西哥和非洲人口减少的主要原因。
Air quality and pollution from mines, power plants and oil exploration have been responsible for population losses in India, Mexico and Africa, it says.
本文主要介绍了一种新的石油勘探MEMS传感器的结构特点、介质材料以及封装方式，并详细地介绍了该产品的主要技术指标。
The paper mainly introduced a new MEMS sensor of oil exploration, characters of MEMS sensor structure, medium material and sealed form as well as already reached technical indexes.
介绍了X射线衍射仪在江苏油田石油地质、石油工程的应用以及对石油勘探和开发的地质意义。
This paper introduces X-ray diffractometer application of petroleum geology and petroleum project in Jiangsu oilfield, and geological meaning of petroleum exploration and production.
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