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.
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.
不过，李毅中对中钢协予以了肯定，并表示钢铁企业应该支持中钢协。
Nonetheless, Mr Li praised Cisa and said steelmakers should support it.
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