成腔 meaning in Chinese

cavitation
celosis
coelosis

Areas of necrosis and cavitation may occur within the tumor .
肿瘤内可以有坏死和成腔区。
Experimental and theoretical study of parallel hole cut blasting with cavity
空孔直眼掏槽成腔模型理论与实践分析
Three dimensional numerical simulation for explosion cavity forming of linear charge in soil
条形装药土中爆炸成腔的三维数值模拟
Research on the restrain effective on soil - water evaporation of the technology of cavity - making by explode in farmland
农田爆破成腔技术对土壤水分蒸发的抑制效能