riffellochung corrugated perforation槽: trough; manger打孔: punch a hole开槽打孔插: slotting打孔: bore; punching; dock; punch; drill a hole; punch a hole; perforatex打孔: x punch下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:槽打孔，即可在微信中查询翻译
