Report - 1. 2 §11-3 缩孔与缩松 3 冷却 凝固 体积收缩 缩 孔 缩 松 应力 变形 热裂纹 冷裂纹.

Select PornographicDefamatoryIllegal/UnlawfulSpamOther Terms Of Service ViolationFile a copyright complaint

Please pass captcha verification before submit form