第十九条不同空气洁净度等级的洁净室(区)之间的人员及物料出入，应有防止交叉污染的措施。
Article 19: Measures shall be taken to protect against cross contamination of personnel and materials entering or leaving clean rooms (areas) of different cleanliness class.
第五十二条工作服的选材、式样及穿戴方式应与生产操作和空气洁净度等级要求相适应，并不得混用。
Article 52: the material, style and way of wearing of protective garments shall be appropriate to the requirements of operation and cleanliness class and shall not be otherwise used.
第五十二条工作服的选材、式样及穿戴方式应与生产操作和空气洁净度等级要求相适应，并不得混用。
Article 52: the material, style and way of wearing of protective garments shall be appropriate to the requirements of operation and cleanliness class and shall not be otherwise used.
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