中文摘要：

企业技术轨道演化路径是企业制定技术发展策略的风向标,现代企业的技术轨道正逐渐由传统的累积型路径向跃迁型路径演化,技术发展不确定性的增加应该引起我国企业的重视.本文提出企业技术能级的概念,对现有技术轨道模型进行完善,建立了相应的数学模型,分别使用改进的索洛残差法和DEA-Malmquist指数法对样本企业的技术能级进行测算和比较,利用面板门限模型验证了企业技术能级的存在.研究结果表明：全要素生产率可以作为测度企业技术能级的指标;要素投入的增加不能有效提升企业的技术能级;企业技术轨道跃迁的实现需要受到来自外部的激发,政策、环境等约束要素对我国企业技术进步的影响被低估.研究结论为技术后发企业提供了技术轨道跨越的有效途径.

英文摘要：

; The evolution route of enterprise technological trajectories is a guideline for an enterprise to strategize technological development. Technological trajectories of modern enterprises have gradually changed from the tradi-tional cumulative route to a leapfrogging route. Th e growing unpredictability of technological development has al-ready garnered much attention from many Chinese enterprises. T o this e n d, the concept of enterprise technological energy level （ETEL ） has been introduced to improve the existing model of technological trajectories. Their mathe-matical model is also built accordingly. T he technological energy level of the enterprises in the sample is calculated and improved by adopting the improved Solow,s residual method and DEA-Malmquist index method, respectively. The panel threshold model is applied to verify the existence of an ETEL . According to the research results, total factor productivity can be used as an index to measure the ETEL . Moreover, an increase in the factor input cannot improve the ETEL effectively. T he realization of the leapfrogging of enterprise technological trajectories should be stimulated externally. The influence of restrictive factors such as policy and environment on the technological pro-gress of Chinese enterprises has been underestimated. This research can provide an effective means for realizing the leapfrogging of technological trajectories for technological latecomers.