詞語：erathem
erathem的意思
Paleoproterozoic Erathem 古元古界;Archean erathem 太古界;Neoproterozoic Erathem 新元古界;Eoarchaean Erathem 地層稱始太古界;Cenozoic Erathem 新生界;
erathem的參考例句
1.Gas reservoirs of upper palaeozoic erathem contains different gas layers, it can be produced by separate layer fracturing. 長慶氣田屬低滲氣田，上古氣藏含有不同層系，需進行分層壓裂改造才能投產。
2.Based on the analysis of the drilling and geological data, the sedimentary system of upper Palaeozoic erathem can be divided into four types. 通過對鑽井資料和地質資料的分析研究，將上古生界沉積體系劃分為四種類型。
3.The Miaogou boron deposit occurs in granulitite of Liaohe group, lower proterozoic erathem, locating at Daxicha village, Kuandian town, Liaoning. 遼寧寬甸大西岔鄉廟溝硼礦賦存於下元古界遼河群含硼變粒岩層位。