粘土包壳作为石英晚期胶结作用的抑制剂可能是特别重要的.Clay coats can be particularly important as inhibitors of later quartz cementation.结果表明其由核心和叠层石包壳组成,具有核形石特有的结构和构造.The structure and texture found these nodules are characteristic of oncolite.回收...
I looked your address up in the personnel file.我在人事档案里找到了你的地址。The General does not like non-combatant personnel near a scene of action.将军不喜欢非战斗部队人员靠近战场。One of the problem areas is lax security for airport personnel.问题之一是...