mechanical efficiency的用法和樣例：
例句
- The mechanical efficiency of this machine is very low, which leads to its failure in finishing its task every month.
這台機器的機械效率很低，每個月都完不成任務。 - The invention has simple structure, stable performance, high mechanical efficiency, large transmission power, wide application range, and low price.
本發明結構簡單，性能穩定，機械效率高，傳輸功力大，應用範圍廣，價格低廉，易於推廣。
