您要查找的是不是：
- solid upcurve bifocal lens 上弯形整块双焦点透镜
- Focusing properties of Gaussian beams passing through a bifocal lens[J]. 引用该论文 季小玲;季小玲;吕百达.
- Franklin's bifocal lens spectacles 弗兰克林(氏)眼镜:双焦点眼镜
- Focusing properties of Gaussian beams passing through a bifocal lens 高斯光束通过双焦透镜的聚焦特性
- solid bifocal lens 整块双焦点透镜
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- 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。
- Cheese is a solid; milk is a liquid. 乾酪是固体，奶是液体。
- Don't smear the lens; I've just polished it. 别把镜头弄脏了，我刚刚擦过。
- Solid fuel motors are coming into use. 固体燃料马达即将开始使用。
- The country was solid for peace. 全国上下都希望和平。
- Water becomes solid when it freezes. 水结冰时便变成固体。
- The miners were solid on this issue. 矿工们在这件事上是一条心的。
- Matter can exist as a solid, liquid, or gas. 物体存在的形态有固体，液体，气体。
- There was a solid vote in favour of the proposal. 提案获全体一致通过。
- The camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。
- When water freezes, it becomes solid. 水结冰时变成固体。
