3. 請用中文翻譯以下(a)到(d)有關“Merits of marine diesel engines”的部分敘述。
(b) Essentially, diesel engine combustion comprises a series of batch processes, whereas the gas turbine uses continuous combustion. In the batch process, higher initial temperatures and pressures can be used than in the gas turbine, since the exposed components are cooled at the end of each process and between processes. The thermal efficiency can therefore be higher in the diesel than in the gas turbine.