38th parallel
![38°
38th parallel north](/Images/godic/202412/13/Earthmap1000x500compac5549.jpg")
38th parallel may refer to:
38th parallel
英语百科
- activated rosin flux for wave soldering
- activated scale
- activated seta
- activated sewage
- activated silica
- activated silica gel
- activated silicate glass
- activated sintering
- activated sleep
- activated sludge
- activated sludge, activated sewage
- activated sludge aeration
- activated sludge bacteria
- activated sludge biota
- activated sludge bulking
- activated sludge culture
- activated sludge digestion
- activated sludge disposal
- activated sludge effluent
- activated sludge filamentation bulking
- activated sludge filamentous
- activated sludge floc
- activated sludge kinetics
- activated sludge loading
- activated sludge method