区: H region; H号: howl; yell规则: rule; regulation; ordination ...编号规则: classification and numbering regulations of files拨号规则: dialing rules冒号规则: double-colon rules信号规则: signal instructions正负号规则: rule of signs闭塞信号规则: block signal rule代数符号规则: algebraic sign conventions铁路信号规则: railway signaling regulations系数符号规则: sign of coefficients rule笛卡儿正负号规则: descartes rule of signs命名和编号规则: the naming numbering and coding rules of highway route ―naming and numbering rules锉刀分类、编号规则: classification and numbering regulations of files区号: area code; area digit; areano; countryid countryname chinacountryname; district number; zone description; zone letter核燃料组件标识号规则: nuclear fuel assembly identification standard地区号: ac area code; area code区号秀: codeshow时区号: zone description线号规: brown and bharwire gauge泊位区号: berth number长途区号: area code大区区号: regional code地区号码: area code