短语词组短语flow feeder mark 波流痕zinc flow ripple mark 锌流波痕cold flow mark 冷塑痕迹Criteria for Flow Mark 流痕的判定标准weld flow mark 焊接流痕;烧焊流痕;属类back flow mark 裂痕Coating Flow Mark 涂层流痕surface flow mark 表面流纹calender flow mark 冷纹 返回 flow mark