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Double-u

n. the 23rd letter of the Roman alphabet

同义词： W letter w

double-U groove双U形槽

double -U antennaU型天线

double-flat U重降号

double-U butt weld双U形对接焊

double-worm U mixer双螺旋混合机

double-tube U reactor双套管反应器

double-pulse u laser双频激光碎石

double-pole U cutout双极断路器

double-flue U boiler双炉胆锅炉

double-cone U antenna双锥形天线

n.the 23rd letter of the Roman alphabet

同义词：Wletter w

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