hassock是什么意思

用法例句

Discussion on distribution characteristics of calcareous sandstone in Shihongtan uranium deposit and its genesis;

十红滩铀矿床钙质砂岩的分布特征及成因探讨

According to the characteristics of containing calcium powder sandstone with high-strength and notable layer distribution,the aggregate processing technology is put forward which could reduce efficiently its flat content.

针对含钙质粉砂岩高强度和层理分布显著的特点,提出了可有效降低其片状含量的加工工艺。