音标：['ræm'eər] ；

冲压空气

词型变化：名词复数形式 : ram-airs

ram-air的用法和样例：

例句

The dynamic performance of a ram air system will vary with Mach number and altitude and this tends to follow the aerodynamic characteristics of the missle.像导弹空气动力特性一样，冲压空气式系统的动态特性随马赫数和高度的变化而变化。

What people Dont Know about Air

Most of them travel 40,000 miles to a satellite and then back to earth. Ten years ago, a satellite was capable of receiving and transmitting more than 33,000 telephone conversations simultaneously. No

发表于:2018-12-01 / 阅读(191) / 评论(0)

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发表于:2018-12-05 / 阅读(202) / 评论(0)

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Lesson 104 We Need Fresh Air

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Australia's Qantas back in the air

SYDNEY, Oct. 31 (Xinhua) -- Australia's airline Qantas planes will be back in the air some time on Monday afternoon after Fair Work Australia (FWA) ruled to terminate Qantas industrial action, local media reported on Monday. Tens of thousands of pass

发表于:2019-02-07 / 阅读(125) / 评论(0)

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In the air

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