Flat-twin engine
- 水平对卧二缸引擎（水平对卧二缸发动机是一种往复式发动机，由左右各1个汽缸组成，常被称为“flat-twin”或“boxer-2”）
Flat-twin engine
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abstract:
A flat-twin is a two cylinder internal combustion engine with the cylinders arranged on opposite sides of the crankshaft. It is a flat engine with two cylinders.
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WordNet
