分析结果表明，环空偏心距、内管冲程、内管冲次对瞬时流量分布的影响较为明显。

Analyses indicate that the eccentricity, the stroke and the frequency of the inner cylinder all affect the instantaneous flow rate distribution remarkably.

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分析结果表明，环空偏心距、内管冲程是影响瞬时流量分布的主要因素。

Analyses indicate that the eccentricity and stroke of the inner cylinder are the main factors that affect the instantaneous flow rate distribution.

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发动机为四冲程空冷汽油机，靠反弹式起动器启动。

The engine is four- stroke, air-cooled gasoline engine which is started by rebound starter and it can transmit smoothly without energy loss.

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