In order to monitor the corrosion of bar and kinds of buried pipeline, an optical fiber corrosion sensor based on corrosion-sensitive metal film was presented.

为了监测钢筋或各种埋地管线的腐蚀情况，提出了基于金属腐蚀敏感膜的光纤腐蚀传感器。

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Among the most sensitive asset classes to monetary easing is gold, the yellow metal that trades inversely with the U.S. dollar and is seen by many as an inflation-hedge.

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Few maps are made of where the mines are laid, and since the home-made varieties contain very little metal, they are extremely difficult to detect and so sensitive that even sniffer dogs can detonate them.

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