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Advances in Civil Engineering
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2018
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Article
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Fig 9
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Research Article
Experimental Study on Prevention of Calcium Carbonate Crystallizing in Drainage Pipe of Tunnel Engineering
Figure 9
Polyvinyl chloride pipe. (a) October 28, 2016. (b) January 28, 2017. (c) April 28, 2017.
(a)
(b)
(c)