system matrix体系: system; setup; hierarchy矩阵: matrix; array关系矩阵: relation matrix; relational matrix; relative matrix模糊关系矩阵: fuzzy relation matrix顺序关系矩阵: sequential relationship matrix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:体系矩阵,即可在微信中查询翻译