角焊缝有效计算长度
effective length of fillet weld
裂缝亚临界扩展长度
precritical crack propagation length
临界有效裂缝长度
Critical effective crack length
微裂缝长度分布
micro-crack size distribution
斜裂缝水平投影长度
horizontal projection length of diagonal cracks
柿芽生长长度
persimmon sprouts’ growing length