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...
黑市上有大量武器出售。There is a plentiful supply of arms on the black market.那些拿起武器自卫的人是些政治犯。Those people who took up weapons to defend themselves are political prisoners.他们已经无耻到把能用的武器都用上了。They've stooped to using any and eve...