single U shaped and double U shaped vertical borehole
返回 18 条匹配短语对
U shaped
波纹
U型
马蹄形
U shaped channel
U形渠道
U shaped bending
U形弯曲
U shaped pieces
V、U形件
U shaped solid armature
U 型固体电枢
U shaped floating dock
U式浮船坞
u shaped manometeru
形压力计
u shaped valleyu
形谷
U shaped support
U形支撑
U shaped steel
U型钢
U shaped caisson
U型沉井
VERTICAL BOREHOLE
竖直钻孔
直井
立孔
直孔
single borehole
单井
single U
单U
double U
双U
borehole technology single
单钻孔技术
Double U model vertical underground pipe
双U型井埋管
single U tube
单U形管
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