optimum efficiency的用法和樣例：
例句
- And with each step away from the clock, our contraptions lose the cold, fast optimal efficiency of machines.
而我們的奇妙裝置離開鍾控的每一步，都意味著它會失去機器的客觀但快速的最佳效率。 - The relation between the optimal efficiency and power output of the engines for an ideal or van der Waals gas as a working fluid is derived.
導出這類熱機以理想氣體或范德瓦耳斯氣體為工質時的最佳效率與輸出功率間的關係。
