提出了从高品位硒、碲废料中分离回收硒和碲的工艺。
The craft for separation and recovery of selenium and tellurium from high grade waste material has been put forward based on experiment results.
纸浆工艺学的毕业生正在寻找一种方法，使得在废料和污染最少的情况下最大化地提高造纸厂的产量。
Pulp technology graduates look for ways to maximize the output of paper mills with minimal waste and pollution.
用含钴催化剂废料作原料，采用酸溶-沉淀法工艺制取氧化钴。
The cobalt oxide is produced from cobalt catalyst waste by using acidolysis precipitate method.
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