downcycle

基本解释

When all those new fields are on-stream, when the SUVs have been sold and the boilers replaced, the downcycle will take hold.
当所有新的领域都投入生产，当（耗油量较大的）越野车被出售，，汽缸被替换时，油价的下降通道将会形成。
The current rebound of China stocks is normal in a bear market environment.Indeed, a similar rebound happened in the last downcycle.
CSFB瑞士信贷第一波士顿--投资策略报告 Life after the rebound No more than a bear market rebound.
Construction and demolition, for example, produce lots of inert waste that can be cheaper to put into landfill than to “downcycle” into lower-value construction materials.
建筑及拆卸产生大量的惰性废物，填埋比“下降性循环”成为价值较低的建筑材料更经济。

a time when there is less economic activity, or when prices or values of something are falling or low
to use waste material or old or used objects to make a product of lower value than the original material or object