bicylindrical是什么意思

Certain lenses are bicylindrical.某些镜头是两筒面的.Those lenses are bicylindrical.那些透镜有两个筒面....

bicylindrical的音标：bicylindrical的英式发音音标为：[baɪsɪ'lɪndrɪkl]bicylindrical的美式发音音标为：[baɪsɪ'lɪndrɪkl]...