The outer wall of the clock tower can be seen with mottled marks.
钟楼外墙依稀可见斑驳的痕迹。
The necessity and material selection for protecting the outer surface of the used cooling tower in power plants are described.
阐述了电厂旧冷却水塔表面防护的必要性和材料的选择。
This utility model comprises two outer bound edges, two inner bound edges and an inner tower, characterized in that the said outer bound edges are provided with a coupler plug;
本实用新型包括两个外包边、内包边 和内架，其特征在于所述外包边的内端设有连接插头；
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