The preparation technology of activate carbon with coleseed - straw was studied.

研究了以油菜秆为原料制备活性类的工艺问题。

Active placentin from lamb placenta was extracted by modern technology of biological engineering, the preparation technology is simple and needed no specific purification process.

摘要以健康羊胎盘为原料，采用现代生物工程技术制备活化羊胎素，制备工艺简单，无需特殊提纯手段。