At 5, 989 feet (1825 m), it was the longest suspension bridge in the world from its opening until 1903, and the first steel-wire suspension bridge.

桥长5989英尺（1825米），自1903年投入使用以来，一直是世界上最长的吊桥和第一座钢索吊桥。

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The M-BUS, the two wire bus, is the European standard for remote instrument data readout system. It mainly used for energy consumption meters.

介绍了M - BUS二线制总线，它是一种用于远程仪表读取数据的欧洲标准，主要用于耗能测量仪表。

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To ensure safety, power or water in the wet land in the vicinity of people buried more than a 1 m and an iron bar as a ground wire.

为保证安全，可在电源或水泵附近的潮湿地中埋人一根1 m以上的铁棍作为地线。

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