Onan
油浸自冷（变压器冷却方式，Oil Natural Air Natural）
🗣️ 情景例句
I did.
是的。
How could that be?
怎么可能有这种事？
One, for instance, consisted of rods of various lengths and thicknesses which would stand up on end like ninepins.
例如，有一种装置是由一些长短、粗细不同的木棒组成；就像九柱戏的木棒一样竖立着，