half-round drill

drill的翻译中文意思-在线英汉词典 ... half-round drill 勺钻, 半圆钻 hammer drill 风钻, 冲击式钻机, 凿岩机; 锤钻 ...

进出口专业英语词汇(H1) ... half-round convex milling cutter 凸半圆铣刀 half-round drill 半圆钻 half-round file 半圆锉 ...