无缺陷材 clear lumber
缺陷材料报告 Defective Material Report
木材缺陷 [木] defect in timber ; defects of wood ; fault ; [木] defect in wood
材料缺陷 fault in material ; heterogeneity ; cold-short
无宏观缺陷材料 macro defect free composites
锯材缺陷 Defects in sawn timber ; saw timber defects knot
有缺陷的材料 Defective Material
材料缺陷报告 defective material report ; DMR
木材的缺陷 fault in wood
打磨焊缝表面缺陷或机械损伤后的厚度小于母材的厚度。
Seam surface defect after grinding or thickness is lower than base material after mechanical treatment.
这种木材差不多是头等材，但它还有些缺陷。
This timber approximates first-class standard, but it still has some defects.
分析钛材管道焊接产生的冷裂纹、气孔、氧化等缺陷的原因和形成机理，提出焊接工艺措施，以确保焊接的质量。
And analyzes the reason and forming mechanism of the defects such as cold crack, air porosity and oxidation etc. proposes the measures of welding process to ensure the welding quality.
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