词汇	standard sum form
释义	standard sum form 标准总和形式
随便看	underground steam underground steam generation underground steel bifurcation underground steel gas pipeline underground steel pipe underground stem underground structure group engineering underground structure model selection underground stems underground stimulating device underground stope underground storage underground storage cache underground storage facility underground storage of gas underground storage of nuclear waste underground storage of oil underground storage pool underground storage pools underground storage reservoir underground storages underground storage system underground storage tank underground store underground storehouse