self-ballasted lamp
a unit which cannot be dismantled without being permanently damaged, provided with a lamp cap and incorporating a light source and any additional element necessary for starting and stable operation of the light source,
这个定义理解的核心是定语从句:which cannot be dismantled without being permanently damaged。也就是说自镇流灯只有永久性损坏了才能拆解。也许我见的灯具类型比较少,根据我目前的认识,所谓的自镇流灯,只有节能灯归为自镇流灯。