灯具与照明物体表面保持一定距离,不能超过最小距离,以免火灾发生.
（意即灯具与照明物体距离过近,会使物体表面长期积累热量,温度升高而可能引起火灾）
又是来自某灯具说明书的句子.A minimun distance from the surface being illu
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