purityn.纯净;纯洁;纯正;纯粹
purity of variety品种纯度
purity of species种的纯度
purity of material材料纯度
purity of web page网页净化
purity requirement纯度要求
purity coefficient纯度
purity of reagents试剂的纯度
Purity of Cu ingot铜锭品位
purity and lucidity清新明快
purity compensation纯度补偿