column theory的: 4次方是 The fourth power of 2 i ...纵向: direction; machine direction ...弯曲: winding; meandering; zigzag; ...理论: theory柱的纵向弯曲: column deflection; columnar deflection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:柱的纵向弯曲理论，即可在微信中查询翻译
