single hole symmetric extruding对称: symmetry; symmetrical断面: section; fracture surface; p ...型材: section bar; proximate matte ...单孔: haplopore模: mould; pattern; matrix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:对称断面型材单孔模挤压，即可在微信中查询翻译
