Wasseraufbereitung /f/P_LIỆU/
[EN] water purification
[VI] sự tinh lọc nước (nước thải)
Wasserreinigung /f/CN_HOÁ, KTC_NƯỚC/
[EN] water purification
[VI] sự làm sạch nước
Wasseraufbereitung /f/KTC_NƯỚC/
[EN] water conditioning, water purification
[VI] sự tinh lọc nước