Correct

递减

/ dìjiǎn /
Strokes

Definition

progressively decreasing/gradually falling/in descending order

Example

As a Verb

decrease by degrees/gradually/progressively/successively

1
Láodòngshēngchǎn
劳动生产率
zhú
逐步
gāo
提高
  
,
chǎnpǐn
产品
de
chéngběn
成本
suízhī
随之
jiǎn
递减
  

The cost of the product decreases accordingly with the gradual rise of productivity.