简明地介绍了逆作法施工，并对逆作法施工和常规法施工做了详细的比较，论述了逆作法施工的合理性和可能性。
The article simply introduces the construction with inverse method, compares inverse method with conventional method, and expounds the justification and possibility of inverse method.
通过对逆锑净化工艺硫酸锌溶液系统中钴闭路循环的分析，对比不同的对策措施，论述了进行钴开路的必要性；
The paper contrasts the different countermeasures and discuses the necessity of removing Cobalt from the solution by analyzing the closed Cobalt cycle in the solution of Zinc sulfate.
本文对单输入单输出系统给出了可逆性的判断准则，建立了新的降阶逆系统的构造方法。
This paper discusses the invertibility of single-input single output linear systems . A new method for construction the reduced inverse systems is derived.
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