Based on the radiation protection monitoring, the radiation protection of a 2.8 PBq 60 Co irradiation equipment run about ten years are summarized and assessed.

Structural Properties of a Small Plasmid from pBR 322 with Deletion and Recombination

由pBR322缺失重组构建的一个小质粒的结构特征

In computer graphics, Point-based rendering ( PBR) is a very new research area.

基于点的真实感绘制是计算机图形学中的一个新课题。

The number of defects found per person-hour was also less using the PBR technique.

使用PBR技术的找到缺陷所需的人时也少得多。

PBR strategy is a better trade-off between the system reorganization time and service availability.

PBR是兼顾系统重组时间和系统服务可用性的折衷策略。

Conclusion The key to prevent the complications is to control indications and to have the skillful procedure of PBV operation. It is profit for PBV safety to deal with complications during operation.

结论严格掌握PBV适应证、熟练操作，是预防PBV并发症的关键，处理好有关并发症，有利于提高PBV的安全性。

Objective To analyze the complications of percutaneous balloon valvuloplasty ( PBV) in 1314 cases, and to study the causes and preventive method of the complication.

目的分析1314例经皮球囊瓣膜成形术（PBV）手术的并发症，探讨其发生原因和防治方法。

Methods: The PBV and superior sagittal sinus were dissected with operating microscope on 40 adult cerebral specimens and their histological section were observed.

方法：通过手术显微镜和组织学切片，对40例脑标本的桥静脉和上矢状窦进行观测。

Results A recombinant plasmid pBV/ IL-2/ PEA was constructed.

结果经鉴定，获得重组质粒pBV／IL－2／PEA。

Here is my ticket, Numer Four.

四号,这是我的牌子.

Dormitory a small numer number of students or many hundreds.

有的宿舍楼只能容纳少量的学生,有的则能容纳数以百计的学生.

When the amount of PGTE in the E-51/ Polymercaptan system is 30 pbw, the tensile strength and the tear strength is increased 116% and 126% separately, without substantial decrease of the curing rate and thermal stability of the cured product.

当PGTE加入量为30（pbw）时，室温快速固化特性和固化物的耐热性基本不变，铁片粘接的剪切强度与不均匀扯离强度则分别提高了116%和126%。

It presented the key technologies of power-by-wire ( PBW) electrically powered actuation systems including high performance hard magnetic material, brushless DC motor-pump, integrated designing and manufacturing, redundancy management, fast response and high precision control.

阐述了发展该机载一体化电作动系统的关键技术，包括高性能永磁、无刷直流电机-泵及其集成设计、冗余管理、高响应高精度控制等；

The results indicated that there was a stronger negative correlation between direct and maternal genetic effects for NOBT and PBW than for NOBA.

结果表明，母体遗传效应对繁殖性状直接遗传效应的选择有不利影响。

Simulation results show that the EHA can meet modern aircraft's requirements to the actuate system, and it can be used widely in the future PBW flight control system.

结果表明，EHA的性能能够满足现代飞机对作动系统的要求，在未来功率电传（PBW）的飞控系统中具有很好的应用前景。

The Enveloping Algebras of τ-Lie Algebras and Their PBW Theorem

τ-李代数的普遍包络代数及其PBW定理

The same treatment was performed on the patients in early escharectomy group at 1 PBW.

早期切痂组患者于伤后1周行切痂术，其他处理同延期植皮组。

The On Machine Verification ( OMV) system can enhance the availability factor of the high-grade NC equipment in effect and reduce the cost of production.

在机检测系统的使用能够有效的提高高档数控装备的使用效率，降低生产成本。

The law of angular velocity and angular acceleration of line of sight is analyzed under different closest distances between OMV and target.

研究了轨道机动飞行器对地球同步轨道卫星的抵近飞行过程。分析了不同过捷点距离下的视线角速度和视线角加速度的变化规律。

According to this situation, this dissertation makes deep research on the module development, motion control and precision of OMV in Open CNC System.

为此，本论文围绕开放式数控系统中在机检测功能模块开发、检测运动控制以及检测精度等问题进行了深入研究。

The French man had been working for French engineering company SPIE under contract to OMV.

该名工人一直在同OMV签有合同的SPIE公司工作。