That is, the compound objective lens has two focal points.
因而，复合透镜有两个焦点。
There is no overall objective difference between the two lens families.
在二者的镜头群之间在客观上没有全面的不同。
Objective To discuss the surgical management and the opportunity of lens dislocation.
目的分析晶状体脱位的手术时机及手术方法。
With the objective to heat should be shown. So don't usually use agglutination lens.
放映用物镜应能耐热，故通常不使用胶合透镜。
With the objective to heat should be shown. So don't usually use agglutination lens.
放映用物镜应能耐热，故通常不使用胶合透镜。
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