路基填料土
Filling material in subgrade engineering
轻质填料路基
embankment filled by light materials
U-型块石路基
U-type crushed rock embankment
色谱填料
chromatographic packings
chromatographic packing materials
chromatographic media
Packings
chromatographic packing
Stationary phase for HPLC
packing material
High performance liquid chromatography column mate
生物沸石填料
biological zeolite filling
biological zeolite packing
生物膜填料塔
bio-packing tower
biological trickling filter
biofilm-packing tower
biofilm-packing column
biotrickling filter
生物陶粒填料
biological ceramsite filtering material
生物填料塔
biological packing tower
biological packed column
biological tricking filter