Why are slow speed diesel engines especially tall? 为什么低速柴油机特别
A.
Because in this way the piston can be withdrawn downwards. 因为这样可以从下部拉出活塞。
B.
The engine can occupy larger space. 因为发动机可占据较大的空间。
C.
The engine may have long strokes which improve engine efficiency. 因为柴油机可以有长冲程以提高发动机的效率。
D.
More maintenance is provided. 因为要为柴油机提供较多的维护。