Earlier engine control systems mainly based on mass air flow, fuel quality and Spark Timing.

早期的控制系统主要是以气缸充气量、燃油质量和点火正时为控制参数。

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Changing spark plugs, air filter, timing belt and other items from maintenance schedule may save you from costly repairs.

根据维护时间表，更换火花塞、空气滤清器、正式皮带和其他配件，这样可以节省维修费用。

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If you are hoping to meet someone new, your timing could not be better because the job of Venus, when paired with Mars, is to spark new love.

如果你想遇见某个新欢，因为金星的存在，而又伴随着火星，这个时间好的不能再好了，非常适合坠入新的爱河。

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My dad was an engineer and I spent countless hours tinkering with him on the DIY projects he had going on around our house, from using an oscilloscope and hand tools, to being allowed to drive the tractor, learning how to set spark plugs and change a timing belt, swapping out alternators, building a computer and soldering circuit paths on to an early motherboard .

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