短語(yǔ)詞組短語(yǔ)focal point distance 注視距離focal l distance 焦距focal film distance 釋義焦點(diǎn)膠片距離focal skin distance 焦點(diǎn)皮膚距離Focal l distance of lens 透鏡焦距focal l distance of objective 物鏡焦距front vertex focal distance 前頂焦距;前頂點(diǎn)焦距;前表面鏡Focal distance length 焦距長(zhǎng)度equivalent focal distance 等效焦距 返回 focal distance