NBN-EN 27785-1-1995 4375 《牙科用直头车 第1部分：为提高速度采用空气压缩涡轮机直头车（ISO 7785：1：1992）》.pdf

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NBN-EN 27785-2-1994 8125 《牙科用直头车 第2部分：直头车和弯头车（ISO 7785：2：1991） n》.pdf

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