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- Lens equation is derived by using Fermat"s principle. 用费马原理推导了透镜的物像公式.
- Lens equation of zxis-beyond object point was derived by using Fermat's principle, the process of derivation indicates clearly that near axial conditions are necessary and sufficient conditions of ideal image formation. 用费马原理推导了透镜对轴外物点的物像公式;推导过程清楚表明近轴条件是理想成像的充分必要条件.
- Derivation of lens equation by using Fermat's principle again 再用费马原理推导透镜的物像公式
- New Thermal Lens Equation of LD Side-pumped Solid-state Laser Rod LD侧面泵浦固体激光棒新的热透镜焦距计算
- 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。
- Don't smear the lens; I've just polished it. 别把镜头弄脏了，我刚刚擦过。
- I can't make this equation come out. 我不会解这个方程式。
- The camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。
- What does x represent in this equation? 这个方程式中的x代表什么?
- 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。
- The equation of wealth with happiness can be dangerous. 把财富与幸福等同起来是很危险的
- The gunsight has an infrared lens for night vision. 射击瞄准器装有用于夜间视力的红外线镜头。
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- An equation or inequality relating the variables in an optimization problem. 在优化问题中，一种表示若干变量相互关系的方程(式)或不等式。
- Show me how to solve this equation. 告诉我，这个方程式怎么解。
