flutyadj.似笛声的;柔软清澈的
flun.流行性感冒
fluorite-granite萤石花岗岩
fluctuating moment波动力矩
fluroescence color荧光色
fluorinating agent氟化剂
fluvo-aquic soil潮土
fluoroprotactinate氟镤酸盐
fluctuations trade贸易波动
fluctuation period波动周期
fluctuating noises波动性噪声
fluorographic unit荧光摄影机