词汇	divalent cation
释义	divalent cation 二价阳离子
随便看	direct foreign exchange quotation direct foreign investment Direct forgetting direct form direct formed supergroup direct formic acid fuel cell direct formic acid fuel cells direct formic acid full cells Direct-forming direct form network direct form networks direct forward gaze direct foundation direct fourier transform algorithm direct fourth direct fracture direct franchise direct fraud direct free kick direct freezing direct freezing desalination direct freight Direct Frequency Conversion direct frequency conversion circuit direct frequency modulation