Zoom lenses變焦透鏡     em@\S  
Beam splitters分束器       \lVX~r4  
discrete不連續(xù)的,分離的     |V2+
4b,  
objective/eye lens物鏡/目鏡       IrU}%ZVV  
mainframe主機     sa%2,e'  
rudimentary根本的,未發(fā)展的       L0{ehpvM  
photographic照相得攝影得           Ly?yWS-x  
taxing繁重的,費力得       JF
x=X=C  
algebra代數(shù)學     &xF 2!t`  
trigonometry三角學     A&i   
geometry幾何學     * %p6+D-C  
calculus微積分學       Zy2@1-z6  
philosophy哲學         {0fQ"))"  
lagrange invariant拉格朗日不變量 cGw*