1) Filter
[英]['fɪltə(r)] [美]['fɪltɚ]
濾層,過濾層
2) Protective filter
保護濾層
4) ceramic filter
陶瓷濾器
5) Filter well
濾水井
6) Substratum
[英]['sʌbstrɑ:təm] [美]['sʌb'stretəm]
次層、基層
参考词条