qualitative grade rectangular filter sheets方形: square定性滤纸: qualitative filter paper圆形定性滤纸: qualitative grade filter circles碱性滤纸法: alkali filter paper process; alkaline filter paper methof韧性滤纸: toughened filter paper下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:方形定性滤纸，即可在微信中查询翻译
