着色剂 stain gage 污染计 stain removal 去污 stain remover 除污剂 stain resistance 防沾污性 staining 着色 staining test 着色试验 stainless steel 不锈钢 staking machine 拉软机 stale beer 陈啤酒 stalk 菌柄 stamp 打印 stamp mill 捣碎机 standard instrument 标准仪器 standard measure 标准尺寸 standard ...