返回首页 返回单词点读 毒鸡汤 朋友圈文案 朱子家训 HTML单页源码 史记 宋史 学习Vue.js 学习MongoDB
adj.未污染的;无杂质的;洁净的
Uncontaminated water is normally used as seal water for vacuum pumps and for compressor cooling as well as for sanitary use. 未污染的水通常用作真空泵的密封水和压缩机的冷却水以及供保健用。
小库网-温馨提示