无缺陷的晶体defect: vi. 叛变;逃走。 He defected to th ...crystal: n. 1.结晶,(结)晶体;晶粒;水晶(=rock cr ...defect in crystals: 晶体缺陷defect-free: 没有缺点的area free from defect: 无缺陷区域下载手机词典可随时随地查词查翻译