For an engine of a given horsepower, single cylinder engines require large flywheels to keep the momentary speed variations.

对于一定马力的发动机来说，单气缸发动机需要较大的飞轮来保持其瞬时速度的变化。

youdao

Given the horsepower behind the GS III, we can't say we're shocked that it beat the pants off its Verizon competitors in all but two benchmarks: the ones focused on graphics processing and battery life.

ENGADGET: Samsung Galaxy S III for Verizon Wireless review Mobile