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Check Engine Light - What does it mean? | Motorist

The check engine light is part of your vehicle's onboard diagnostics (OBD) system. Computers have control and monitor vehicle performance, regulating such variables as engine speed (RPM), fuel mixture, and ignition timing, and may even tell the automatic transmission when to shift.

motorist.org/articles/check-engine-light

金属注射成不锈钢17-4PH: 制程、性质与最佳的颗粒_新闻_新材料在线

耀德讲堂长篇专案翻译:邱耀弘博士/赵育德硕士 This paper was populated on page 49~76 Vol.12 No.2, June 2018, Powder Injection Molding International.

www.xincailiao.com/news/news_detail.aspx?id=243040

雾霾_百度百科 - baike.baidu.com

雾霾天气一种大气污染状态,雾霾对大气中各种悬浮颗粒物含量超标的笼统表述,尤其pm2.5(空气动力学当量直径小于等于2.5微米的颗粒物)被认为造成雾霾天气的“元凶”。

baike.baidu.com/item/雾霾/731704