The clouds form surfaces where chemical reactions can take place that produce ozone-destroying molecules.

在这种云表面化学反应会产生一种破坏臭氧层的分子。

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A new algorithm for tracing equiangular curves is presented to improve the machining quality of free-form surfaces.

为了提高自由曲面加工质量，提出一种等斜率曲线跟踪算法。

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Experimental results show that the fault signal in free-form surfaces machining can be clearly monitored and distinguished.

实验结果表明，自由曲面加工的故障信号能很好被检测区别开来。

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He observes, for example, that carbon nanotubes failed as lubricants (one of the early uses dreamed up for them) because they react with metal surfaces to form carbides.

ECONOMIST: Nanotechnology: Pipe dreams | The

In its current form, the tool only surfaces deals in which eBay offers the lowest prices.

FORBES: EBay Launches 'Deal Finder' Tool -- That Only Highlights EBay Deals

Built by connecting a number of standard modules each measuring 384mm both in height and width and weighing eight kilograms, the Diamond Vision OLED is scalable and can be designed to flexibly form a certain size or shape, even against rounded surfaces.

ENGADGET: Mitsubishi's huge, modular OLED display set to go on sale worldwide on September 21