因此，大量的网上购物、医疗诊断检查和华尔街进行交易的规程等方面的专利可能面临失效的局面。
As a result, a lot of patents for online shopping, medical-diagnostic tests and procedures for executing trades on Wall Street could be invalidated.
而D PF技术，作为轻型车尾气后处理技术的主流技术，对DPF的失效诊断，是整个DPF技术obd系统中的关键点。
And DPF technology is the mainstream technology of tail gas after-treatment technology for light vehicle, the failure diagnosis of DPF is the key point of OBD system in the entire DPF technology.
本文研究了壁流式DPF系统基于压降特性的失效诊断策略。
This paper studies up on the strategy for failure diagnosis of wall-flow DPF system based on pressure drop characteristics.
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