If the cataract is on the outer edge of the lens, no change in vision may be noticeable.
如果白内障长在晶状体的外侧，也许在没有改变视力的时候能发现。
The method of the operation: Celebrity of this locality of? of contraction of box of lens of uncut jade of emperor strong? , outer home town person, home town scenery, of home town humanitarian, the column such as native land literature.
操作的手段：一是开设本地新闻，本地名人，在外的家乡人，家乡风景，家乡的人文，本土的文学等栏目。
The design is such that it's self-shaded, and the aperture ring is recessed inside the outer lens housing.
设计是这样，它的自身阴影，以及光圈环，是休会内外部透镜房屋。
The metal winding filling piece, in the belt the outer ring winding filling piece, the flexible graphite seal ring, the octagonal pad, the ellipse planchet, the tooth profile pad, nearby the lens pad, the excel in package the filling piece, the asbestos rubber plate, can produce φ15-φ4000 the specification product
我们厂的主导产品有：金属缠绕垫片、带内外环缠绕垫片、柔性石墨填料环、八角垫、椭圆垫、齿形垫、透镜垫、高强包边垫片、石棉橡胶板、高强石墨复合板、蝶阀多层次密封材料、特制密封件产品，能够生产φ15-φ4000规格的产品。
Each of the input fibers is fixedly secured to an outer side of one lens section in alignment with a respective lens portion thereon, and each of the output fibers is fixedly secured to the outside of the other lens section in alignment with a respective lens portion thereon.
每根输入光纤牢固地固定到一个透镜部件的外侧，与其上的相应透镜部分对准，并且每根输出光纤牢固地固定到另一透镜部件的外侧，与其上的相应透镜部分对准。
The lens was fastened by the method outer clamping ring.
最后，通过外部压圈法来固定透镜。
In the part of introduction, the advantages of solid-sate are presented and the state of the development and research on the high power solid-state lasers and thermal effects in active medium are mentioned. Then the main content and purpose of this dissertation is given.2. The thermal effects of rod solid-state are studied. The active medium and the pump are analyzed and the origin of the thermal effects is opened out. Through studying the temperature distribution, stress distribution, refractive power and birefringence, the fact that the un-uniformity of temperature distribution is the origin of thermal stress, thermal lens and thermal birefringence is disclosed. To reduce the thermal effects, the un-uniformity of temperature distribution and the heat in the active medium should be lessened. Some thermal compensation methods such as rotator and self-adjusting lenses are mentioned.3. Geometry of active medium such as tube, disc and slab has advantage to decrease thermal stress, increase output power and improve beam quality. The temperature of inner wall and outer wall severely infect beam quality, and the cooling of the interface of tube laser should be enhanced. Pre-stress added on outer wall of tube can improve stress distribution, decrease stress and increase output power. Similarly tube self-adjusting lens is exploited to compensate for thermal lens.
通过对棒状激光介质中的温度分布、应力分布、热透镜效应和双折射效应的分析，了解到温度分布不均匀是激光介质产生热应力、热透镜效应和双折射效应的根源，得出减少介质中热量的产生，降低整体温度，改善温度分布对减少固体激光器热效应具有重要的作用，定量分析了极限泵浦功率与棒半径及长度之间的关系，自然引伸出高功率光纤激光器可以空气冷却，并能承受高泵浦功率的结论，并简要介绍了双折射补偿措施，重点研究了自平衡热透镜补偿法，得出这一补偿激光介质热透镜效应的方法需要关键解决的问题；(3)着重分析和讨论了其它几何构型的激光介质在减小热效应、提高输出功率和改善光束质量方面具有的优势，特别是通过对管状介质的研究，发现管状介质的内外壁温度对光束质量有重大影响，理论上解释了内泵浦管状激光器内壁温度较高时光束质量较差的原因，提出加强内壁冷却是改善管状介质激光器光束质量的一个重要措施；通过对管状介质热透镜效应的研究，理论上证明了大口径管状介质有利于减小热透镜效应；提出了在管外壁施加预应力的构想，推导和化简了相应的计算公式，并通过计算机模拟发现施加预应力对改善介质中应力分布，提高管状介质的激光器输出功率具有显著作用；在提出预应力法的基础上，又提出把应用于棒状介质的热透镜自平衡补偿法用在管状介质中可以减小管状介质中的热透镜效应。
According to the invention a portion (25, 26) of the surface of the outer bulb (21) facing away from the discharge vessel (23) is shaped as a negative lens.
按照本发明，外壳(21)的背离放电容器(23)的表面的一部分(25，26)做成负透镜的形状。
Specification: The inner lens after be treated by anti-fog has anti-scratch, anti- impact, 100% anti-UV, anti-fog, and ext. function. The outer lens surface can be treated with hardener vacuum coated. After hardened treated, the lens have good anti-scratch; After coated treated, the lens have anti- impact, anti-scratch, 100% anti-U function, ext.
特点：内镜片经过防雾处理，其具有防刮花，抗冲击，防紫外线，防雾等多种功能；外镜片其外表面可进行硬化处理，真空镀膜处理等；经过硬化处理的镜片，具有良好的抗冲击及耐磨性能；经过镀膜后的镜片具有抗冲击，防刮花，抗 UV100%等功能。
Results and Conclusions: Our simulations show that in order to improve the focal shape, the outer diameter of the annulus must be as large but the radius of acoustic lens must be as small as possible.
结果与结论：为了改善椭球焦域长短轴之比，环状外径应尽量取大，声透镜半径应尽量取小；
The outer shell of the liquid-filled convex lens is provided with two structures; a two-piece combined type structure and an integral type structure.
充液凸透镜的外壳，分两片合成式和整体式两种结构；
The utility model discloses a liquid-filled convex lens which is an optical convex lens formed by transparent liquid filled in a convex hollow transparent solid outer shell.
充液凸透镜，是用透明液体充进凸型空心透明固体外壳中而形成的一种光学凸透镜。
Methods We use remedied disposable injector(5～10volume, 22G, outer diameter ＜0.7mm) to materials smear, and dyed the smear with improved Wright-Giemsa Method. Particular abnormal cells were searched under low-multiplying microscope and cell`s structure characteristics were observed carefully under oil lens. Classification examination was put into practice for only normal cells observed. For the dubious specimen, tuberculosis-Ab, acid-fast bacteria staining, flow cytometry, CD series, gene, DNA aneuploidy, ZPP and tumor markers etc were detected.
利用改良一次性5～10ml注射器(22G、7号注射器，外径＜0.7mm)，针吸取材、涂片、行改良瑞-姬双染技术，低倍镜查找特殊异常细胞，油镜仔细观察细胞形态结构特征，对于未见异常细胞要进行分类检查，对疑难标本，同时做结核抗体、抗酸菌染色、流式细胞仪、CD系列、基因、DNA异倍体、锌原卟啉、肿瘤标志物等检测指标。
The lens hood is used to cover up the lens. Program design of outer baffle vanes and improvement of conical inner baffle in R-C system
R-C系统外遮光罩挡光环的程序化设计及锥状内遮光罩的改进