stepped阶: steps; stairs形: form; shape的: 4次方是 The fourth power of 2 i ...阶形拱: steeped column; stepped arch阶形梁: notched beam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:阶形的，即可在微信中查询翻译
