前言 ···············································································，·········，·，·······················，…El 1范围 ·················································，···········，·············································……1 2 规范性引用文件 ············，···································，········，·······················……，….……1 3 术语和定义 ··················，·············，··············································，······················……1 4 产品分类 ··········，，·········，······································· 4 4.1瓷质卫生陶瓷 ····································，········，，························……，·········.……4 4.2 陶质卫生陶瓷 ·······························，·····】·············································...……4 4.3 产品分类代码 ，，·· ···，··，。‘·，··，·。。···，··，········，··。··，·······················……，.……5 5 一般技術要求 · 5 5.1 外观质量 ···························，·················· 5 5.2 最大允许变形 ····························································，····……，，，···……，…… 5 5. 3 尺寸 ·················································。·····················，·‘································……6 3.4 吸沝率 ····‘·······，····························，·········································