power density profile的用法和樣例：
例句
- If, however, the void has a more realistic, smooth density profile, then a distinct observational signature presents itself.
然而，如果這種空洞有一個(gè)更合理的更平滑的密度分布，那么就會(huì )有一個(gè)顯著(zhù)的觀(guān)察特點(diǎn)出現了。 - A new scheme of tracer selection is developed to improve the quality and the density of cloud motion winds.
文中設計了一種示蹤云選取算法，以改善云跡風(fēng)的質(zhì)量和密度分布。
