Facility scattered neutrons 條件散射中子
False indication 假指示
Family 族
Far field 遠(yuǎn)場(chǎng)
Feed-through coil 穿過式線圈
Field， resultant magnetic 復(fù)合磁場(chǎng)
Fill factor 填充系數(shù)
Film speed 膠片速度
Film badge 膠片襟章劑量計(jì)
Film base 片基
Film contrast 膠片對(duì)比度
Film gamma 膠片γ值
Film processing 膠片沖洗加工
Film speed 膠片感光度
Film unsharpness 膠片不清晰度
Film viewing screen 觀察屏
Filter 濾波器/濾光板
Final test 復(fù)探
Flat-bottomed hole 平底孔
Flat-bottomed hole equivalent 平底孔當(dāng)量
Flaw 傷
Flaw characterization 傷特性
Flaw echo 缺陷回波
Flexural wave 彎曲波
Floating threshold 浮動(dòng)閥值
Fluorescence 熒光
Fluorescent examination method 熒光檢驗(yàn)法
Fluorescent magnetic particle inspection 熒光磁粉檢驗(yàn)
Fluorescent dry deposit penetrant 干沉積熒光滲透劑
Fluorescent light 熒光
Fluorescent magnetic powder 熒光磁粉
Fluorescent penetrant 熒光滲透劑
Fluorescent screen 熒光屏
Fluoroscopy 熒光檢查法
Flux leakage field 磁通泄漏場(chǎng)
Flux lines 磁通線
Focal spot 焦點(diǎn)
Focal distance 焦距
Focus length 焦點(diǎn)長(zhǎng)度
Focus size 焦點(diǎn)尺寸
Focus width 焦點(diǎn)寬度
Focus(electron) 電子焦點(diǎn)
Focused beam 聚焦聲束
Focusing probe 聚焦探頭
Focus-to-film distance(f.f.d) 焦點(diǎn)-膠片距離（焦距）
Fog 底片灰霧
Fog density 灰霧密度
Footcandle 英尺燭光
Freguency 頻率
Frequency constant 頻率常數(shù)
Fringe 干涉帶
Front distance 前沿距離
Front distance of flaw 缺陷前沿距離
Full- wave direct current（FWDC） 全波直流
Fundamental frequency 基頻
Furring 毛狀跡痕
False indication 假指示
Family 族
Far field 遠(yuǎn)場(chǎng)
Feed-through coil 穿過式線圈
Field， resultant magnetic 復(fù)合磁場(chǎng)
Fill factor 填充系數(shù)
Film speed 膠片速度
Film badge 膠片襟章劑量計(jì)
Film base 片基
Film contrast 膠片對(duì)比度
Film gamma 膠片γ值
Film processing 膠片沖洗加工
Film speed 膠片感光度
Film unsharpness 膠片不清晰度
Film viewing screen 觀察屏
Filter 濾波器/濾光板
Final test 復(fù)探
Flat-bottomed hole 平底孔
Flat-bottomed hole equivalent 平底孔當(dāng)量
Flaw 傷
Flaw characterization 傷特性
Flaw echo 缺陷回波
Flexural wave 彎曲波
Floating threshold 浮動(dòng)閥值
Fluorescence 熒光
Fluorescent examination method 熒光檢驗(yàn)法
Fluorescent magnetic particle inspection 熒光磁粉檢驗(yàn)
Fluorescent dry deposit penetrant 干沉積熒光滲透劑
Fluorescent light 熒光
Fluorescent magnetic powder 熒光磁粉
Fluorescent penetrant 熒光滲透劑
Fluorescent screen 熒光屏
Fluoroscopy 熒光檢查法
Flux leakage field 磁通泄漏場(chǎng)
Flux lines 磁通線
Focal spot 焦點(diǎn)
Focal distance 焦距
Focus length 焦點(diǎn)長(zhǎng)度
Focus size 焦點(diǎn)尺寸
Focus width 焦點(diǎn)寬度
Focus(electron) 電子焦點(diǎn)
Focused beam 聚焦聲束
Focusing probe 聚焦探頭
Focus-to-film distance(f.f.d) 焦點(diǎn)-膠片距離（焦距）
Fog 底片灰霧
Fog density 灰霧密度
Footcandle 英尺燭光
Freguency 頻率
Frequency constant 頻率常數(shù)
Fringe 干涉帶
Front distance 前沿距離
Front distance of flaw 缺陷前沿距離
Full- wave direct current（FWDC） 全波直流
Fundamental frequency 基頻
Furring 毛狀跡痕