查询词典 visual acuity

According to the application background of the 7000 m manned underwater vehicle and with monocular CCD cameras as sensors, two visual station keeping methods for underwater vehicle are proposed, i.e. the model-based monocular vision positioning for the target when model is known, and the feature-based visual servoing for the target when model is unknown.

以7000m载人潜水器的水下悬停为应用背景，以单目CCD摄像机为传感器，提出了基于模型的单目视觉定位和基于特征的视觉伺服两种水下机器人视觉悬停技术方案，分别适用于已知模型的观察目标和未知模型的观察目标两种情况。

objective to evaluate the clinical effect of high myopia treated with lasik by a small optical zones flying spot scanner machine.methods 364 cases (721 eyes) of high myopia were treated with lasik by the schwind esiris laser machine with small optical flying spot scanner.the ablation zone was single zone or multi zone.the ablation depth was range of 78～187μm.all cases were followed up for 3～12 months.the changes of their visual acuities,subjective manifest refraction and complications were observed.results postoperatively,at one day and 3 month the visual acuities were 1.0 or better in 72.0%（519/721） and 81.7%（589/721）.the diopter within ±1.00 was 89.7%（647/721） and 90.7%（654/721）respectively.the complications include:decentral ablation 3 eyes (0.42%),decentral flap 5 eyes (0.69%),epithelial ingrowth 5 eyes(0.69%),glare 15 eyes(2.08%).conclusion the clinical effect of high myopia treated with lasik by a small optical zones flying-spot scanner machine was safety and efficacy,although it needs more corneal tissues.

目的 评价小光斑飞点扫描式准分子激光lasik治疗高度近视的效果。方法采用德国schwind esiris准分子激光机对364例（721眼）高度近视进行了lasik治疗。切削模式采用单区或多区切削，切削总量为78～187μm。随访3～12个月，观察术后视力、屈光度和并发症等情况。结果术后裸眼视力≥1.0者，术后1天、3个月时分别为72.0%（519/721）、81.7%（589/721）；术后屈光度在±1.00d以内者，术后1天、3个月时分别为：89.7%（647/721）、90.7%（654/721）。主要的并发症有：偏中心切削3眼(0.42%)、瓣位置偏离5眼(0.69%)、角膜上皮植入5眼(0.69%)、眩光15眼(2.08%)。结论小光斑飞点扫描式准分子激光lasik治疗高度近视的临床效果安全有效，但是需要切削较多的角膜组织。

Firstly, based on BLOB knowledge, the method transferred 3D color space to 2D angle-mode color space and defined a set of rules of truncated cone to detect shadow BLOB and reflection BLOB. Secondly, the method removed the ghost BLOB from the moving visual BLOB by calculating permanence memory. Finally, the method used a long-time and short-time dual-background model to detect static visual object.

基于BLOB知识，将3D颜色空间变换为&夹角-模差&2D空间后，定义一套圆锥裁剪规则划分出阴影BLOB和反射BLOB；再以一种持久化记忆PM方法判别出鬼影BLOB；最后改进双背景模型检测出静止目标和运动目标。

Produce any visual effect you can imagine, from highly realistic natural phenomena to stylized, 2D "painterly" effects. Maya software delivers dynamic interaction of hard and soft bodies determined by physical rules, along with the state-of-the-art visual-effects technology of Maya nCloth, Maya nParticles, Maya Fluid Effects, Maya Fur, Maya Hair, and more.

nDynamics：Maya核心之一的仿真框架得益于创新的nparticles模块，支持粒子间对撞（想必早期maya版本不支持粒子碰撞而使用户使用Realflow及Houdini等特效软件让大家郁闷很久），而且可以和Maya ncloth互相作用，用一个非常特殊的方法模拟液体的流动。

For example, if someone is good at sketching or painting, they probably possess"visual intelligence,"and will therefore be a"visual learner."

举个例子，如果某人擅长素描或绘画，他们可能拥有&视觉智能&，因此将成为&视觉型学习者&。

Visual Studio Source Code Control Provid - One of the many aggravations of Visual Studio is the inflexibility in changing the source code control provider.

Visual Studio中的一个不方便的地方是不能灵活改变源代码控制提供者。

Many people are visual learners, but much fewer are effective visual communicators.

许多人是视觉的初学者，但是少了许多有效的视觉感染。

"Learning and Remembering Chinese Characters" provides a systematic study aid designed with the psychological principles to ease and bear on the daunting process of learning Chinese characters. One of the key principles is the use of visual imagery. It has a modern approach: use of simplified characters and pinyin with little emphasis on historical etymology and is learning-oriented, using visual and imaginative memorisation techniques from the psychology of learning with tips on learning habits

易速者，是指本系列编写的目的在于帮助读者容易快速地掌握英语；全能者，是指本系列涉及英语学习的方方面面——动词、名词、形容词、副词、介词、短词、句型、同近义词语辨异，典型错误解析和基础语法。365者，是指本系列采用每天学一点儿的形式，使读者充分利用零碎时间，日积月累而增加自己的英语知识，逐步提高使用英语的能力和水平。

Based on the trigonometric parallaxes from the Hipparcos Catalog, we have derived the absolute visual magnitudes for 457 Be stars, subsequently we obtain absolute visual magnitudes calibration of Be stars for luminosity classes III, IV and V.

基于依巴谷星表给出的三角视差，我们确定了457颗Be星的绝对视星等，随后得出具有光度级Ⅲ、Ⅳ和Ⅴ的Be星的绝对视星等的定标。

The new visual experience /Moving Horizon: I have discussed the basic point on an idea which is Moving Horizon exists in the bridle between the ground and vision. By the ways of visual changeovers and parallaxes, I collaged the connection with the train station Hua-Shan and Hua-Shan Culture Park,and formed the new-surfaced landscape in the citied space.

视觉经验反转 Moving Horizon：是从最基本的地平线观念出发去讨论，以脚踩土地，视野所及的范畴去探讨，藉由视觉转换及错差的手法，去拼贴华山车站与华山艺文特区的连结，形塑出都市空间中的新地景表皮。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。