1. 自由飞轮：为了追求自行车所能达到的极速, 所以车的整体在设计上最大可能地达到最优化: 车架在硬度和重量上达到完美的结合, 无变速器(前后各一单齿轮) , 转动方面既不是自由飞轮(freewheel)也没有刹车, 轮胎采用管状(Tubular) 设计以减少

2. 慣性：MLX90283利用单相电机的特性成功的将惯性(Freewheel)原理应用到振动电机中. 当电机正常旋转时,传统的控制电路即使在整流正弦波形趋近于0时也会继续供电. 因为消耗了额外电能,这和电源管理的目标有所抵触. 与之相反,

3. 游滑轮：freewatersaturation 自由水饱和度 | freewheel 游滑轮 | freeze 冻

1. (通常指骑自行车或开车下坡时)靠惯性滑行，溜车
    If you freewheel, you travel, usually downhill, on a bicycle without using the pedals, or in a vehicle without using the engine.

    e.g. He freewheeled back down the course.
           他沿原赛道滑了下去。

1. a clutch (as on the rear wheel of a bicycle) that allows wheels to turn freely (as in coasting)

1. coast in a vehicle using the freewheel

2. live unhurriedly, irresponsibly, or freely

    e.g. My son drifted around for years in California before going to law school

    Synonym: drift