The contrast sensitivity function ( CSF) and the visual acuity were investigated in 115 patients ( 169 eyes) of blindness and low vision before and after the use of 3X telescope visual aid.

When the blind or the low vision patients with the same or similar visual acuity in both eyes, the CSF is an important consideration in prescribing visual aid.

对双眼盲及低视力患者视力相同或相似需决定何眼使用助视器时CSF是一重要依据。

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This article introduces the visual aids, describes what each visual aid does, and shows you how to quickly show or hide them when you work in design view.

本文将介绍这些视觉帮助，讲述每个视觉帮助的用途，并且会演示在设计视图中操作时如何快速显示或隐藏这些视觉帮助。

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This paper presents the experimental study on flow pattern identification for air-water two-phase flow in a vertical tube at low pressure. The flow patterns were identified by visual observation with the aid of a stroboscope.

本文以低压空气一水作介质，进行了垂直上升管内气液两相流流型鉴别的实验研究；

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Built to extend the functionality of the new Parallel Watch Window, the pack includes visual tools to aid in debugging multithreaded applications.

构建此工具的目的是要扩展新的并行监视窗口（Parallel Watch Window）的功能，这次发布的包中包含了四种可视化工具，能够帮助你调试多线程的应用程序。

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The laser centerline localizer ( LCL) is extremely precise long range visual landing aid for aircraft carrier fight operations, particularly at night and in marginal weather, to aid in the safe recovery of the aircraft.

激光中线定位器（LGI）是极为精确的远距离可视着舰系统，特别在夜间和临界天气时，能帮助飞机安全着舰。

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In history teaching, the promotion of intuition embodies in two respects, name-ly, the intuition of teachers' language and of visual teaching aid.

在历史教学中，增强直观性，主要体现在教师的语言直观和使用直观教具两个方面。

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Exeter visual speech aid

埃克塞特氏视觉语言训练设备

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Tools can be tailored for specific needs or they can be more general tools, such as a simple visual drawing aid.

可以根据特定需求对工具进行定制，也可以使用更为通用的工具，如简单的可视绘图辅助工具等。

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And after using visual aid in near visual acuity, 86.84% cases' near visual acuity were no less than 0.5.Conclusion The main etiology of visual acuity in the juvenile's group are congenital and inherited diseases and in the adult's group is high myopia.

配戴近用助视器后，近视力≥0.5的病例占总数的86.84%。结论先天性、遗传性疾病是少儿组视力残疾的主要病因，高度近视是成人组视力残疾的主要病因。

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After wearing visual aid in distant visual acuity, the percent of free-blind reached 44.4% and the percent of free-disability 85.41%.

在配戴了远用助视器后，脱盲率达44.4%，脱残率达85.41%；

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Audiovisual-oral teaching refers to the teaching method that selects original English films as teaching contents, takes audiovisual media as method and mixes visual aid, listening and speaking together into one.

视听说教学是选用优秀英文原版电影作为教学内容，以电教媒体为手段，融视、听、说于一体的教学。

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Especially, the paper demonstrates the effects of some characteristics on building space of plant landscape, for example figure, color which are directly related to intuitionistic sense. visual aid.

文章阐明了出色地发挥植物视觉特性，注重利用植物观赏特性中与人直观感受最相关的体量、质地、色彩视觉特性对构成丰富的园林景观空间的作用。

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The results also suggest that the use of visual aid has no significant effect on the comprehension of difficult words and the information to which the visual images bear no relation.

研究还发现，视频辅助功能对帮助学习者理解所听到的较为生僻的词汇及与画面无关的具体信息的作用不显著。

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1 Decision tables offer a simple, visual aid, and they can be applied in knowledge-based systems to perform verification processes efficiently.

1决策表提供了一个简单的，可视化的帮助，它可以在知识库系统中被使用，来高效的执行验证过程。

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Visual aid for teleoperation applied to satellite on-orbit self-servicing

视觉辅助遥操作在卫星在轨自维护中的应用

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To show or hide each visual aid, click it on the visual aids submenu.

要显示或隐藏每个视觉帮助，请在“视觉帮助”子菜单中单击该视觉帮助。

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Objective To provide visual aid of arterial specimen for anatomic teaching of stomach and reference for clinical gastric operation.

目的为胃部解剖学教学提供直观清晰的动脉血管标本，并为临床胃部手术提供参考。

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Is each and every slide or visual aid pertinent to point and to the presentation?

每一张以及所有提供的幻灯片或可视资料是否与你的观点和报告相关？

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Great slides serve as a visual aid that reinforces the speaker's message.

出色的幻灯片为演说者提供视觉辅助，增强信息传递的效果。

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Another cool trick for prompts, and a great visual aid, is use of color.

提示符的另外一个很有用的地方是使用有强烈的视觉效果的颜色。

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