degressive的例句（degressive在句子中的用法）

• The rule that field extracts , can divide commonly be high yield period, firmly period, degressive period. 油田开采的规律, 一般可分为高产期 、 稳产期 、 递减期.
• Resource increasing cost of degressive, exploitation, this is the objective law that resource city avoids hard. 资源递减 、 开采成本递增, 这是资源型城市难以避免的客观规律.
• However, distant river field also is facing the dilemma with degressive resource. 然而, 辽河油田也面临着资源递减的困境.