介绍了难浸金矿用焙烧法、加压氧化法和细菌氧化法预处理的原理、工业实践及几种方法的技术经济比较。
The paper introduces the principle, industrial practice and comparison of technical economy to pretreat refractory gold mineral through roasting, pressure and bacterial oxidation.
当手术前抗生素应用理论在所有的外科手术实践中成为一个标准后，根据细菌污染程度来预期手术类型已变得不再重要。
Classifying operations by the expected degree of bacterial contamination has become less important as preoperative antibiotic therapy has become a standard practice in all types of surgery.
应用推荐