按: press; push down文件: document; file; papers; inst ...类型: type; mold; form; cut文件类型: document type; file format; file type; filetype; list files of type子文件类型: subfile type保留文件类型: reserved file type父类文件类型: parent document type文件类型定义: document type definition,dtd; dtd document type definition文件类型关联: file type associations文件类型描述: document type definition文件类型声明: doctype文件类型宣告: document type declaration文件类型文件制作: document type documentation无效的文件类型: error 63 invalid file type自定义文件类型: d d-channel /文件类型定义,资料(数据)类型定义: document type definition提供的是无效的文件类型: invalid file type supplied这儿不允许文件类型: file type not allowed here文件类: files classes按文件夹: by folder按文件属性: by file attributes按文件询问: inquire by file案件类型: case type部件类型: part name style附件类型: type of attachment; types of attachment