Pre-and postoperative refraction and best corrected visual acuity ( BCVA) were registered.

Blind: The best corrected visual acuity ( BCVA) of good eye was less than 0.05;

视障情况：全盲为好眼的最佳矫正视力低于0.05；低视力指好眼的最佳矫正视力低于0.3。

Results Preoperative BCVA was finger counting to 0.05 in all 15 eyes.

结果术前15眼视力均≤0·05。

There was also no difference in the BCVA between the two groups.

并且两组的最佳视觉敏感度没有差异。

At 24 months, there were 3 eyes ( 3.8%) had lost 2 or more lines of BCVA because of secondary keratoconus.

再次术后24月最佳矫正视力与再次术前相比下降2行以上的3眼占3.8%。

'It's easy to get things done in Oslo,' says singer and performance artist Nils Bech in a downtown caf é near the affluent shopping district surrounding the Storting, the Norwegian parliament.

歌手兼演员尼尔斯&12539；贝克（Nils Bech）在市中心靠近挪威国会（Storting）的一家咖啡馆说：在奥斯陆做事很容易。

Attempt to analyze the polytonality, legato-staccato and feasibility of singing in bech's 《 bicinium invention 》 and the important points of playing

浅析巴赫《二部创意曲》中的复调性、断连性、歌唱性与弹奏要求

Stipends from the Norwegian Ministry of Culture have facilitated both Bech and Ekblad's work: He has two years of financing, and she has three.'

挪威文化部提供的奖金帮助了贝克和艾克布莱德的创作：前者可得到两年资助，后者为三年。

This research adopts the Bech-H questionnaire to test nine lovelorn university student, discovers most of them have suicide idea, partly have stronger idea.

本研究采用Bech-H无望量表对9名失恋大学生进行自杀倾向性测试，发现大部分被试有自杀意念，部分自杀意念较强烈。

Bech Testing Technique of Parking Brake for Motor Vehicles

汽车驻车制动器台架试验技术

Discrete Variable Structure Control of Ship Autopilots Based on Bech's Equation

基于Bech模型的船舶航向离散变结构控制

Methods The condensation of 2-bromo-5,6-dimethoxy-indan-1-one with various aminoalkyl phenols in the presence of ( K_ ( 2) CO_ ( 3)) and acetonitrile gave the corresponding title compounds, and the in vitro AchE and BchE inhibitory activities were evaluated by the modified Ellman method.

方法在K2CO3和乙腈存在下，将2-溴-5,6-二甲氧基-1-茚酮与多种胺烷基苯酚缩合得到一系列苯氧茚酮类衍生物，并采用改进的Ellman方法研究它们的体外AchE和BchE抑制活性。

The BChE was purified to electrophoretic homogeneity by salting out, ion-exchange chromatography on DEAE-cellulose and gel filtration on Sephadex G-200. Finally the enzyme was purified 278. 5 folds and the enzyme activity recovery ratio was 17.8%.

该酶经过两次硫酸铵盐析、DEAE-52离子交换层析和Sephadex G-200凝胶过滤层析后，其比活力由21.5U/mg提高到5944.1U/mg，纯化278.5倍，回收率为17.8%，达到电泳纯。

A BChE from A serum was selected to determinate pesticide residues by comparison of many BChE from different materials.

通过对6种不同动物组织的胆碱酯酶的比较研究，最终选择以A血清BChE作为农药残留的检测用酶。

We also investigate the effective potential of the system in phase space, which is consisted of two weakly-coupled BECs through a double-well.

本文就双阱中弱耦合的玻色-爱因斯坦凝聚体系统在位相空间中的有效势进行了研究。

This paper proposes an efficient Balanced-Energy Clustering Scheme ( BECS) which is based on the energy consumption model in multi-hop wireless sensor networks.

以无线多跳传感器网络中的能量消耗模型为基础，提出一种基于能量均衡的自适应分簇策略。

From then on, BECs have become a popularly investigated platform for various effects of quantum many-body interaction in strongly correlated systems.

从那时起，BEC就成为研究强关联系统的各种量子多体效应的的平台。

In chapter II, a general equation describing a two-level atomic BECs transmitting through laser beam is constructed.

在第二章建立了二能级原子玻色-爱因斯坦凝聚体穿越激光场的一般方程。

Results O 3 increased the adhesion of BECs to PMNs and EOS.

结果：O3应激可增加BECs与PMNs、EOS的黏附率，产生应激反应；

The past decade has seen a dramatic progress in the research of BECs both theoretically and experimentally.

因此，在近十年内，人们在玻色-爱因斯坦凝聚的理论和实验研究方面取得了巨大的进展。

Atomic BECs have good coherent properties and the interactions between atoms make its physics nonlinear.

原子玻色-爱因斯坦凝聚体有很好的相干性，凝聚体中粒子间的相互作用又使其具有非线性性质。