cool-down rate的用法和樣例：
例句
- The results revealed that increasing either jet velocity or subcooling degreealways promotes the hot surface cooling rate.
實(shí)驗結果表明，無(wú)論是增大工質(zhì)過(guò)冷度還是提高射流速度，總會(huì )使得熱壁面的冷卻速率加大。 - In cumulus convection ascent rates of several metres a second give a cooling rate of a few degrees per minute.
在積云中，每秒幾米的對流上升速度造成的冷卻速率為每分鐘幾度。
