采用室内土柱淋洗试验方法，研究了污水灌溉条件下土壤碱度和石膏应用对土壤中重金属元素动态变化的影响。
Effects of soil sodicity and gypsum application on dynamical behavior of heavy metal elements under effluent irrigation were studied by means of soil column leaching method in laboratory.
使用镘刀，花车，刷子和喷涂设备，应用，平整并使每层石膏光滑。
Apply, level and smooth coats of plaster using trowels, floats, brushes and spraying equipment.
未经煅烧的脱硫石膏的应用领域主要有：水泥、农业土壤改良等。
The fields of application of uncalcined FGD-gypsum were cement, agricultural soil amendment, etc.
应用推荐