fluken.侥幸；偶然的机会；锚爪；比目鱼；吸虫；鲸的尾片fluke disease吸虫病fluke infection吸虫感染Fluke Corporationn.美国福禄克公司fluke turned anchor折嘴锚fluke-transmitted disease吸虫传播的疾病flukes of anchor endosseous implant爪(钩)式骨内植入体Fluke Corporation Beijing Representative Office美国福禄克公司