increment

1. N-COUNT An increment in something or in the value of something is an amount by which it increases. 增加量[正式]

The average yearly increment in productivity was 4.5 per cent. 生产率的年平均增长量是4.5%。

2. N-COUNT An increment is an amount by which your salary automatically increases after a fixed period of time. 定期加薪[英国英语] [正式]