申論題

3. 請用中文翻譯以下(a)到(d)有關“Merits of marine diesel engines”的部分敘述。

(d) While a low speed engine often gives a longer ignition delay than its medium speed counterpart with the same fuel, the ignition delay is still proportionally shorter in a low speed engine, in terms of degrees of crankshaft angle. This is one of the reasons why a low speed engine is considered more forgiving than other types of machinery when low-quality, low-cost fuels are used.