CQ Thread Ball Valves CQ  螺纹球阀

expanding shut type hard sealing ball valves  撑拢式硬密封球阀

Flange Ball Valves  法兰球阀

Lining Ball Valves  衬里球阀

pipeline ball valves  管线球阀

Tank Lorry Ball Valves  槽车球阀

ball check valves  球阀

ball control valves  最小二乘算法; 旋转类调节阀; 最小二乘法

leather ball & imitation leather ball  皮球及仿皮球

leather ball & synthetic leather ball  皮球及合成革球

the slab gate valves of API 6D pipeline valves  API 6D平板闸阀

2-dimensional ball-bar  二维球杆仪

3-way ball valve  三通球阀

40mm ball  大球

a ball of fortune  受命运摆布的人

A COSTUME BALL ON BOARD SHIP  船上的服装舞会

abrasive coated ball  包有磨料的球

absorber ball  吸收球

accretionary lava ball  增积熔岩球; 岩栓