But the principle of focusing rays through an aperture onto a two-dimensional surface remains the same.
但其原理通过孔径聚焦光线在一个二维表面是保持不变的。
Cleaning and disinfecting things like desks and doorknobs can play a role in protecting us, he says, but 'focusing on one surface misses the point, because no surface is not germy.'
他说，清洁并为桌子和门把手等物体进行消毒在保护我们也发挥著作用，不过只专注于一个表面就错了，原因是任何表面都有细菌。
By focusing a circle of light on the cornea and measuring its reflection, it is possible to determine the exact curvature of the cornea's surface.
通过将一束圆形光圈聚焦在角膜上，测量反射过来的光线，就能得出角膜表面曲率的确切数据。
An irregular shaped cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye.
形状不规则的角膜或晶状体会使光线无法在视网膜——眼球背面的感光膜上准确地聚焦。
To keep the measurement light focusing on the measured surface, an automatic focus unit is very important.
要保证测量光聚焦在待测表面，自动聚焦控制是非常重要的。
There are prominent differences between traditional surface science underUHV conditions and catalysis in the real world, focusing on the so-called"materials gap"and "pressure gap".
在真空表面科学研究与实际催化反应体系之间存在着显著的差异，具体表现在所谓的“物质鸿沟”和“压力鸿沟”上面。
These effects are explained by the surface plasmon polariton Bloch modes and self-focusing theory.
这些效应可以用表面等离子体激发和自聚焦理论来解释。
For PCWs with different degrees of concaveness, the power reaches about 80% at different focusing points when the morphology of the concave surface is optimized.
通过对褶皱表面的形貌优化，我们得到了不同曲率半径的高质量光子晶体波导聚焦器件，聚焦能量达到80%以上。
In addition, it is because collimated laser beam is free of focusing problem that output image can be projected to curve surface.
另外由于准直的激光束不存在聚焦问题，输出的图像能够准确投影到曲面上。
The implementation of stereo mapping LMCCD camera included qualified optical lens, LMCCD image surface, focusing mechanism, and inner orientation.
实现用于立体测绘的LMCCD相机，需要满足技术指标要求的光学镜头、LMCCD像面、调焦机构以及内方位元素。
Luneberg lens antenna is a spherical layered medium lens antenna, and its main feature is its capability of focusing the incident wave to a point on the spherical surface.
龙伯透镜天线是一种球形的分层介质透镜天线，其主要特点是能够把入射波聚焦到球表面一点。
Focal depth plays an important role in optical storage systems, and high focal depth makes the focusing servo system easy to track the disk surface.
焦深在高密度光盘存储系统中具有十分重要的作用，大焦深可以使调焦伺服系统容易跟踪盘面。
Rachel Bishop added. She is chief of consulting services at the National Institutes of Health in Washington. "It is surface dryness and is eye strain from focusing."
美国眼科协会的迈克尔·杜恩纳斯医生说：“这种病症能导致疲劳、头疼、颈部疼痛、视觉重影，以及间歇性视觉模糊。”
Rachel Bishop added. She is chief of consulting services at the National Institutes of Health in Washington. "It is surface dryness and is eye strain from focusing."
美国眼科协会的迈克尔·杜恩纳斯医生说：“这种病症能导致疲劳、头疼、颈部疼痛、视觉重影，以及间歇性视觉模糊。”
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