异径管接头 缩径承窝 大小头承插管的英文

reducingsocket

• 异:    different
• 径:    footpath; path; tr ...
• 管接头:    union joint; nozzl ...
• 缩:    contract; shrink
• 承:    bear; hold; carry
• 窝:    nest
• 大小:    big or small
• 头:    5点就得动身 have to sta ...