标签：engine 相关文章
What Do Octane Numbers Mean? At the gas pump, you have a choice of octane numbers. 87? 93? Whats the difference? To explain octane numbers, lets take an imaginative leap into the internal combustion engine of a car. Inside the cylinders are combustio
发表于:2018-12-31 / 阅读(75) / 评论(0)
英语听力文摘 English Digest
英语听力文摘 English Digest