钝边是焊件开坡口时，沿焊件厚度方向未开坡口的端面部分。
为了使儿童免受到割伤，最好使用钝边的挂钩。
Use blunt-edged hooks to keep children safe from sharp edges.
为了使清洁直纸板折叠，先如勺子处理沿钝边行折痕，然后对折直边坚定。
To make clean straight folds in cardboard, first make a crease along the line with a blunt edge such as a spoon handle, then fold against a firm straight edge.
对母材熔深作了剖析，结合实验数据详述了母材熔深与余高的关系以及母材熔深与坡口熔深、钝边熔深的关系，并且提出了关系式。
It analyzes the base metal's penetration. It discusses the relations of base metal's penetration to reinforcement, base metal's penetration to groove penetration, root penetration and pro...
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