Pollution loadings and physico-chemical characteristics of low-sulfite SCMP effluent were determined. 分析測定了藍桉低亞鈉磺化化機漿制漿廢水的污染負荷和物理化學(xué)特性。
Although skin can be a relatively impermeable barrier, a few drugs have just the right physical and chemical characteristics to cross it at reasonable rates. 雖然皮膚是相當不易穿透的障礙，但少數藥物的物理化學(xué)特性，恰好能讓這些藥物以合理的速率穿過(guò)皮膚。
