radial bearing upper drive sub
upper bearing box arch bridge
ball bearing guide rail
erection of guide bearing bush
Guide bearing
导向轴承
导引轴承
导引方位角
定向轴承
导轴承
导轴承瓦
水导轴承
轴承
导承
hydraulic turbine guide bearing
bearing bearing of pile
桩的承载力
聚对苯二甲酸乙二醇酯(PET)
聚对苯二甲酸乙二醇酯
water diversion from the upper Yangtze River in the south to the upper Yellow River in the north
1221 upper working face
2×2 Upper Triangular Operator Matrixes
95% Upper confidence limit
Aberdeen Upper Reservoir
Accommodation above the Upper Deck
accurate upper bound solution