1)  Back focus
后焦距
2)  back focal length(BFL)
后焦
3)  calcined coke
煅后焦
1.
It is difficult to deal with saturated asphalt-loaded calcined coke,so resource waste and the second pollution are brought about,and there are many problems existing in common regeneration methods.
吸附了沥青烟的的饱和煅后焦难于处理,造成资源浪费及二次污染,普通的再生法又存在各种问题。
2.
Low density of pitch fume from self-baking anodic trough of aluminum factory was treated by adsorption with activated calcined coke.
采用吸附回收法处理铝厂预焙阳极槽低浓度沥青烟气 ,以煅后焦为吸附剂 ,对其不同质量浓度的沥青烟气 ,进行吸附穿透试验研究 ,得到在常温下对 3种粒径的煅后焦不同质量浓度沥青烟气的吸附特性曲
4)  rear focus plane
后焦面
1.
In order to obtain parallel beam,the retical must be in the rear focus planeof it s objective.
为获得平行光,平行光管的分划权必需严格位于物镜后焦面上。
5)  calcined-coke
锻后焦
6)  back focal length
后焦截距<光>
参考词条
补充资料:变焦距镜头
能在一定范围内改变焦距的摄影镜头。在照相机、电影摄影机或摄像机位置不变时,也能摄下被摄体由远到近或由近到远的画面。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。