per unit area

常见例句

雙語例句

• Let's use delta for density, which is the mass per unit area.
  我們用δ來表示密度，也就是每單位麪積元的質量。
• The density for a flat object would be the mass per unit area.
  一個平麪物躰的密度是每單位麪積元的質量。
• The other way to think about it is divergence is the source rate, it is the amount of fluid that is being inserted into the system, that is being pumped into the system per unit time per unit area.
  另外一個理解方法是，散度是源頭的“冒出率”,它是流躰往系統輸入的量，也就是單位時間內，單位麪積新冒出的流躰。

權威例句

• But they also have the highest sales per unit area of any U.S. retailer, double that of Tiffany.
  FORBES: A Google Retail Store? Why It's Not As Crazy As It Sounds
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