镜片

Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays).

远心手术（场射线离开平行光轴，不像巴卢镜片，其中发散射线）。

I need to buy a pare of glasses frame,but I will keep the old lens.

我需要买新的眼镜框，不过我会留着旧镜片。

The sagittal depth ," S ",(also called sagitta , sagittal height or sag)is the perpendicular distance between the geometric center of the back lens surface and the diameter of the lens.

12矢深，" S "，，指镜片内曲面的几何学中心至线状直径之间的垂直距离。

Approach is to dip cotton balls ethanol scrub, scrub the parts, including LED, lens and mirrors, photosensitive surface, it is necessary to pay attention to ethanol must be pure, or else they will become more dirty washing, but also can use water After ethanol washing, the lens at the lens and reflectors Oh breath and then gently wipe clean swab until unabated until smooth.

处理方法是用棉球沾无水乙醇擦洗，擦洗的部件包括发光管、透镜及反光镜、光敏管表面，要注意无水乙醇一定要纯，否则会越清洗越脏，也可以在用无水乙醇清洗后，对准透镜及反光镜片呵一口气，然后再用干净的棉棒轻轻擦拭，直到光洁如初为止。

Approach is to dip cotton balls scrub ethanol, scrub the parts, including LED, lens and mirrors, photosensitive surface, it is necessary to pay attention to ethanol must be pure, or else they will become more dirty washing, but also can use water After ethanol washing, the lens at the lens and reflectors Oh breath and then gently wipe clean swab until unabated until smooth.

处理方法是用棉球沾无水乙醇擦洗，擦洗的部件包括发光管、透镜及反光镜、光敏管表面，要注意无水乙醇一定要纯，否则会越清洗越脏，也可以在用无水乙醇清洗后，对准透镜及反光镜片呵一口气，然后再用干净的棉棒轻轻擦拭，直到光洁如初为止。

Well, it's been done for the first time ever – and with just a simple lens and a plate of glass at that.

好吧，这还是第一次这么干过，而且，还只用一个小镜片和一块小玻璃。

It can be regarded as a modern high-end Porro of classical design, but made with state of the art materials, lens coating and sealing techniques.

在经典设计中，它可看作髦高档古典保罗镜，是用了最高科技的原料、镜片镀膜和技术装备。

What is presbyopia, and how can these be optically corrected?

什么是老花？如何通过光学镜片来校正？

After the calculation, the physician can read the numbers of pulses that would be required for this ablation, and the sizes of the various pulses created with various spot scanning ,next ,the surgeon is able to utilize the star s4 excimer laser to create a prevue lens with this calculated ablation so that the patient can subjectively assess the vision quality benefits of this particular correction.

在进行计算以后，医师能读取切削手术必须的脉冲数量，并且由变量光斑扫描所带来的不同脉冲的大小，然后，外科医生能运用VISX STAR s4准分子激光子童打制虚拟角膜镜片，这样医生可以主观地评估这一特定的矫正手术的视觉质量的优越性。

Elite competitive goggle. Optical quality lens for maximum clarity and peripheral vision. Sleek low profile fit to minimize drag resistance.

SPEEDO Speed Socket国家队奥运专用竞赛泳镜是一款流线设计超低水阻的完美专业竞赛泳镜，光学镜片保证最大限度的清晰度和视觉范围。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。