“nightsoil”可以造什么句，nightsoil造句

one-stage activated sludge process of nightsoil

administrating system or work of nightsoil and sewage from boats and ships

nightsoil work administrating system

Feasibility test of HBH-Ⅱ compound microorganism on the reduction of septic tank nightsoil sludge

nightsoil and sewage from boats and ships working system