The rule of reservoir pressure distribution and bottom hole flowing pressure alteration of a periodic trial-produce well in infinity subterranean formation.

无限大地层中—口间歇试采生产井的地层压力分布及井底流压变化规律；

youdao

He describes the O'odham Indians, at the end of one of their periodic treks to the ocean, proving their manhood by the terrifying trial of wading in up to their armpits.

ECONOMIST: Travels in the desert