查询词典 focal ratio

focal plane：焦面

focal length ratio 焦距比 | focal plane 焦面 | focus of earthquake 震源

focal radius：焦点半径

focal proliferation 局灶性增殖 | focal radius 焦点半径 | focal ratio 焦比

nominal focal surface：名义焦面

nominal focal ratio 标称焦距比 | nominal focal surface 名义焦面 | nominal fracture strain 标称破裂应变

focal ratio：焦比

即:放大倍数=物镜焦距/目镜口径 =入射瞳孔直径/出射瞳孔直径 ---------------------------------- 焦比(Focal Ratio) 望远镜放大倍数不能无限制的增加,即目镜不能太短;最短约四毫米,主镜焦距亦不能太长,究竟焦距长度如何决定呢?

focal ratio：焦比(焦距/直径)

Focal Length:焦距 | Focal Ratio:焦比(焦距/直径) | Thickness:厚度(应该是主镜镜片厚度)

nominal focal ratio：标称焦比

nominal deviation 标称偏仪 | nominal focal ratio 标称焦比 | nominal poer 标称功率,额定功率

nominal focal ratio：标称焦距比

nominal flow rate ==> 公称流量 | nominal focal ratio ==> 标称焦距比 | nominal focal surface ==> 名义焦面

focal length ratio：焦距比

focal length 焦距 | focal length ratio 焦距比 | focal plane 焦面

focal variation ratio：变焦倍比,变焦距倍率

focal symptom ==> 局灶性症状,局灶性症状 | focal variation ratio ==> 变焦倍比,变焦距倍率 | focal vitreous degeneration ==> 局灶性玻璃样变,局灶性玻璃样变

focal distance ratio：焦距比

focal distance ==> 焦距 | focal distance ratio ==> 焦距比 | focal eikonal ==> 焦点程函

Jaycee：房祖名

房祖名(Jaycee)投资六位数字代理薄荷糖,前晚於中环某酒吧举行庆祝派对,成龙大哥现身撑爱子场,引起一阵混乱,可惜成龙大哥一到场即急步进场,之后又走后门离去,整晚显得十分低调.

basement complex：基盘岩群;基盘杂岩

"基盘","basement" | "基盘岩群;基盘杂岩","basement complex" | "基盘岩石","basement rock"