在建工程净额 bal of construction in progress ; Net bal of construction in progress

工程净水设备 Engineering Machine

净水流程 Stages

净化程序 decontamination procedure

净扬程 net lift ; net head

洁净室工程 Clean room Project

洗净程度 washability

双层馏出物净化过程 [化工] Dualayer distillate process

洁净工程 Cleanroom zone

净压头净扬程 net head