middle Triassic series

• 中三叠统

middle Triassic series的用法和样例：

例句

1. Source beds are turbidite of middle Triassic series.
   矿源层为中三叠统浊积岩。
2. The Jinya fine disseminated gold deposit in the northwestern Guangxi of Middle Triassic occurred in turbidites.
   桂西北凤山金牙中三叠统微细浸染型金矿床产于浊积岩中。