英语语法分析

The second set consisted of patina ― a chemical film encrustation on one of the limestone boxes.

第二套样本中包含有铜绿――在一个石灰石盒子上附着的一种化学物质。

Maybe his recent saltwater dunking and ice encrustation had caused a problem in the MJOLNIR system.

或许是近期的盐水浸泡和冰冻使雷神锤盔甲出了问题。

The disadvantages are mainly high equipment costs and plugging of the lines by sediment, salt encrustation, or algae.

缺点主要是设备费用高，管道易被泥沙、盐分结晶或藻类植物堵塞。