notcher断屑器notchn.刻痕；等级；切口vt.赢得；刻凹痕；计分notching of splice bars鱼尾板上道钉槽notched serrated sickle锯齿式镰刀notched impact specimen缺口冲击试样notch wood with a knife用刀在木头上刻V形凹痕notched impact strength切口冲击强度notched semaphore blode鱼尾形臂板notched bar impact test缺口冲辉验,凹口冲辉验notch sensitivity ratio凹口敏感比notch-bar cooling bed齿条式冷床notched and cogged joint槽口榫接