and a unit is generally 3 to 5 hours of work a week.

而且每门课通常是一周3到5个小时。

很好奇住宿生活 - SpeakingMax英语口语达人

Dr McGuire's report drew attention to the role of the "confidential unit" within the ombudsman's office and a lack of confidence among other staff in the work of this unit.

BBC: Justice Committee

This extreme density reduces, per a given unit of work, the datacenter size, energy consumption, complexity and cost.

FORBES: HP Moonshot: Say Goodbye to the Vanilla Server

And the logic works with servers as well as storage, as each device category continues to decrease in size, improve in capacity and performance, and reduce its power consumption per unit of work with each new generation.

FORBES: The Case for the Infinite Data Center