混凝土中钢筋的腐蚀是一个电化学过程。
The corrosion of reinforcing steel in concrete is an electrochemical process.
其中钢结构车棚就是目前常用的一种，也是最受市场欢迎的。
The steel structure is commonly used in a shed, which is the most popular on the market.
李毅中发表评论之前，中国官方媒体对中钢协的指责之声正愈演愈烈。
Mr Li's remarks follow increasing criticism in the Chinese state-owned media of Cisa.
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