on a periodic basis什么意思

on a periodic basis什么意思 on a rolling basis on a currency-neutral basis on a short-term basis on a long-term basis是什么意思 trade on a when-issue basis periodic 英语翻译If two or more monomeric units are used to make one polymer,a copolymer is formed.The statistical,random,alternating,and periodic copolymers show the relationship of two mers on an individual basis.The block ,graft ,A-B cross-linked,and i 英语翻译：up 21.5 percent on a year-on-year basis on a project by project basis 何意? 求翻译!on a need to know basis 英语翻译deals with me like that on a regular basis. what do you do on a daily basis? choose their lifework on a hit-or-miss basis materials on a sub contract basis 如何翻译 The People That Surround You on a Regular Basis 歌词 the laser printing service is provided on a charge basis. We?re on a semi-first name basis.怎么翻译?