常見例句雙語(yǔ)例句Vertical migration of hydrocarbon in underground oil and gas accumulation and its ring halo effect have been demonstrated is many oil and gas fields.地下油氣藏中烴類垂向運(yùn)移及其環(huán)暈效應(yīng)已為很多油氣田所證實(shí)； 返回 accumulation ring