tight gas sands

• 致密砂岩

tight gas sands的用法和样例：

例句

1. Correctively distinguish the two kinds of tight sand gas from each other is very important to guide natural gas exploration and make the right exploitation plan.
   准确判识两种类型致密砂岩气藏对于指导天然气勘探和合理制定开发方案均具有重要意义。