hard-grained roll硬: hard; stiff; tough铸铁: iron casting foundry iron; p ...滚筒: expansion cylinder; rattler; ...冷铸铁滚筒: chilled iron roll; chilled roll未淬火的铸铁滚筒: grain cast-iron roll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:硬铸铁滚筒，即可在微信中查询翻译
