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to phrases
open trough
ecol. 明槽
met. 【压】 围盘开顶槽; 开顶槽 (围盘的)
tech. 开放式槽; 敞口槽
open top trough
met. 围盘开顶槽
open trough
: 10 phrases in 3 subjects
Chemistry1
Metallurgy5
Technology4