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单词 troughing
释义 troughing, n.|ˈtrɒfɪŋ, -ɔː-|
[f. trough n. + -ing1 1 g.]
Troughs collectively; provision of troughs; a set or system of troughs.
1825J. Nicholson Operat. Mechanic 85 The openings in the bottom of the troughing should be of iron.1904Daily Chron. 31 Dec. 6/7 On the walls of the tunnels 153 miles of troughing have been fixed to carry the cables.
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