tarnishing的音标：tarnishing的英式发音音标为：['tɑ:nɪʃɪŋ]tarnishing的美式发音音标为：['tɑnɪʃɪŋ]...

The causes of tarnishing gold and silver - plated connectors were studied respectively.分别探讨了接插件镀金和镀银层变色的原因.Bright tin electrodeposits on copper wire are susceptible to tarnishing.铜线材经光亮镀锡后易产生腐蚀变色.Do they not realize thei...

n.（印花）白地沾色v.（通常指金属）（使）失去光泽，（使）变灰暗( tarnish的现在分词 )，玷污，败坏...