与"ball boy"相近的词条

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• ball bearing、ball-bearing
• ball-bearing arm support
• ball-bearing forearm orthosis
• ball-bearing forearm orthosis(BFO)
• ball bearing rotating stage
• ball boy
• ball burnisher
• ball-cage mechanical prosthetic valve
• ball-cage prosthesis
• ball-catching view
• ball clay
• ball cock
• ball crusher
• ball electrode
• ball-end clasp
• ball-ended cane introducer

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