英语语法分析

The stratigraphic horizons have long been divided according to a lithostratigraphic boundary.

长期以来，地质分层采用岩石地层单位界面。

The different researchers have established and used many different lithostratigraphic units in the west Shandong area disorderly.

鲁西地层分区在不同时期、不同研究者建立和使用了许多不同的岩石地层单位，使用比较混乱。

No lithostratigraphic unit has been set up for the Silurian-Devonian strata in the vicinity of the Jinsha River, western Sichuan.

川西金沙江一带的志留—泥盆纪地层，前人没有建立岩石地层单位。