ball tube mill
常見例句
- The great research value of this subject is illustrated in this paper, based on the industry and its research background related to tube mill and ball crusher.
本文由管磨機(jī)與球破機(jī)相關(guān)行業(yè)及其研究背景入手，說明課題的巨大研究價值。 返回 ball tube mill