求助：玩具中活动部件间隙的理解
各位大侠，请问ASTM F963中，有一段这样的话“It includes, but is not limited to, wheels and rigid-wheel wells, fenders, or the radial clearance between the wheels and chassis of ride-on toys, or the driven wheels and other parts of toys powered by electrical, spring, or inertial energy.”，其中的轮子和刚性轮套是不是限定为乘骑玩具的，还是单指轮和轮套（无任何玩具类型的限定）？
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