您要查找的是不是：
- D. can be obtained at only one magnification (for a constant projector lens setting) which is a considerable disadvantage of such microscopes. D.;可以通过仅仅一次放大（通过一种固定的投影透镜设置）取得，对于这类显微镜来说，这是一个永远的弱点。
- For this reason the lenses that are equivalent of the eyepiece in an optical microscope are called “projector” lenses. 正是由于这个原因，这些相当于光学显微镜目镜的透镜被称为“投影镜”。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- I do not deny that the projector be top quality. 我并不否认放映机质量上乘。
- Some adjustment of the lens may be necessary. 可能有必要调节一下镜头。
- Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品？
- He uses lens to make things appear clearer. 他用镜片以便看东西更清楚些。
- The lens is often used to make telescopes. 镜片常被用来做成望远镜。
- The film flew off the spool and wound itself round the projector. 电影胶片从卷轴滑出缠绕在放映机上了。
- One who operates a movie projector. 电影放映员操作电影放映机者
- Don't smear the lens; I've just polished it. 别把镜头弄脏了，我刚刚擦过。
- How long will it take to set up the projector? 把这个放映机安放好需要多长时间?
- The camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。
- projector lens 放映机镜头,放映机透镜
- A close- up lens is ideal for taking close- up picture. 近摄镜用来拍特写照片最理想。
- In this operation the surgeons implant a new lens (in the eye). 医生在这次手术中给病人(眼球)植入了新的水晶体。
- This is our newly designed build in projector. 这是我们新近设计的内装式放映机。
- There is a new projector in my office. 我的办公室里有一架新的幻灯机。
- The film is run through a projector. 影片通过放映机放映。
- There are some problems with this film projector. 这台电影放映机出了些问题。
