单词	nature of trade union
释义	nature of trade union 工会性质
随便看	hollow cathode discharge tube hollow cathodeeffect hollow cathode effect Hollow-cathode effect hollow cathode electron bombardment hollow-cathode He-Cd laser hollow cathode ion coater hollow cathode ion source hollowcathode lamp hollow cathode lamp hollow-cathode lamp hollow cathode laser hollow cathode metal vapor laser hollow cathode method hollow cathode source hollow cathode tube hollow-cathode tube hollow cathode tube method hollow celluloid ball hollow cenosphere hollow cenosphere insulation dry powder hollow center hollow-center optie fiber hollow center punch hollow center pusher train