简述技术秘密的概念、特征与类型，阐明其构成要素，提出通过正当途径获取工业企业 技术秘密的若干方法．指出实施过程中应避免的几个问题。 Briefly describe the concept, characteristics and types of technical secrets, clarify their constituent elements, and propose some methods for obtaining technical secrets of industrial enterprises through proper channels. Point out several issues that should be avoided in the implementation process.