短语词组短語shrinkage e allowance 收縮容許量metal -shrinkage allowance 金屬收縮畱量welding shrinkage allowance 銲接收縮量Recommended Shrinkage Allowance Report 推薦的收縮率allowance for shrinkage 收縮裕度;收縮畱量;許可收縮量 返回 shrinkage allowance