roller standard滚柱: pin roller架: frame; rack; shelf; stand柱架: bent; column frame; pillar support滚柱: pin roller◇滚柱轴承 roller bearing; 滚柱轴承钢 roller bearing steel; 滚柱轴承环 roller race立柱架: column support下载手机词典可随时随地查词查翻译