常見例句雙語例句The natural gas in the Ordovician of the central-eastern part of the basin is divided into four migration fields by using the data of carbon isotopic ratio in methane.利用甲烷碳同位素資料將盆地中東部奧陶系天然氣劃分出四個(gè)運(yùn)移場。 返回 isotopic carbon ratio