ICH: Q 4 B Annex 12: Analytical sieving general chapter: Annex 12 to note for evaluation and recommendation of pharmacopoeial texts for use in the ICH regions on analytical sieving general chapter - Step 3(ICH:Q 4 B附录12：分析筛选总章：ICH地区使用的药典文本评估和推荐注释附录12：分析筛选总章-步骤3)