液体，流体( fluid的名词复数 )；
"a fluid situation fraught with uncertainty"
同义词：unstable
同义词：runny
"the fluid motion of a cat"
同义词：fluentliquidsmooth
"liquid (or fluid) assets"
同义词：liquid
"Britain is not a truly fluid society"
同义词：mobile
drilling fluid钻井液；钻孔液体；钻液；钻井泥浆
fluid flow流体流动
supercritical fluid[热力]超临界流体
fluid mechanics流体力学，液体力学
body fluid体液
cerebrospinal fluid脑脊液，脑脊髓液
cutting fluid切削液；乳化切削油
working fluid工作流体，工缀体；入井液，工族
fluid pressure流体压力
fluid bed流化床；怜床
fluid dynamic流体动力学的
fluid catalytic cracking流化床催化裂解
amniotic fluid[动]羊水；羊膜水
hydraulic fluid[化]液压机液体
reservoir fluid[地质]储层流体
fluid density流体密度
fluid power流体动力；液力；液压传动
fluid loss体液损失；失水量
viscous fluid粘性流体
newtonian fluid牛顿流体；牛顿铃
