Objective: To summarize the clinical application experience of a new simple type Continuous and Constant Pressure Skin Expansion Perfusion Apparatus(CCPSEPA).
目的：总结一种简单易行的“交互反馈式全封闭型持续恒压皮肤扩张灌注器”的临床应用经验。
2
The electrical conductivity of Beijing dolomite and limestone has been studied by means of a high pressureapparatus of solid medium piston cylinder type.