The deposit occurred in the exocontact of east Zhongchuan rock body, and is near the stratigraphic contactbelt between Middle Carboniferous and Middle Devonian.
矿床产于中川岩体东外接触带内，处于中石炭统与中泥盆统的接触带附近。
2
A belt grinding contact wheel made from rigid and flexible material is adopted, performing both machining and polishing functions.
该方法采用了一种刚柔组合的砂带磨削接触轮，兼有切削和抛光的功效。
3
Dongping gold deposit occurs in the internal contactbelt between Shuiquangou alkali mixtite and old layers.