Freesen弗雷森
freeadj.自由的;免费的;畅通的;没有…的;未使用的;空闲的;随意的v.释放;使自由;使摆脱;解除;使可用于(某目的)adv.免费地;自由地
Free - radicals and fluorosis自由基与氟中毒
freezing and thawing resistance抗冻
free span of submarine pipeline悬空管道
free-convection heat transfer自由对流传热
free-vibration characteristic自振特性
freestyle slalom roller skating平地花式轮滑
free-fall rocket core sampler自动下沉采泥器
free erythrocyte protoporphyrin游离红细胞原卟啉