This is a commom phenomenon, and it called as "obstacles of acception".

Objective: To study the reason of hematogenous disease in blood acceptors.

目的：明确受血者输血后血源性疾病的原因，划清疾病传播责任，减少医疗纠纷。

Study on the Plant Regeneration Culture of Different Transgenic Acceptors from Wheat

小麦不同转基因受体材料的植株再生培养研究

Considered charge transfer, the small molecules are all acceptors except N2, electrons transfer from clusters to molecular.

从电荷转移的角度看，除了N2分子，其它分子都是受主，电子从团簇转移到分子。

This may be caused by the Sb ion implantation, and Sb as acceptors exist in the films.

这可能是由于Sb离子的注入引起的，并且是作为受主存在的。

There are2,500 student networked PCs, video-conference classrooms, multimedia classrooms and access for students to course, scheduling, and student information via the web.

学校配备了2500台联网的个人电脑、视频会议教室、多媒体教室，学生可以通过网络了解要学习的课程、课时安排以及学生信息。

Relational database access is a foundation course of computer science.

关系数据库是一门计算机科学的基础课程。

Teaching Platform system already used in circuit classes in this semester and students can easily access to the course website to get teaching resources through Android intelligent terminals and PC browsers.

教学平台已经开始在本学期电路课使用，学生可以很方便地通过使用Android智能终端和PC浏览器访问教学平台来获取课程教学资源。

For this service, prompted growing demand in use EPON technology, access, of course also led to a variety of network architecture ( EPON).

对这种服务不断增长的需要，促使在接入网中使用EPON技术，当然也导致了多种多样的EPON网络架构。

However, diversities still exist when students access online course resources at different time or place, which are mainly caused by the information processing among different distant-education agencies ( colleges, public service system and branch study centers).

这种差异主要源于支持服务在不同网络教育机构（网院、公共服务体系、校外学习中心）之间传递造成的信息丢失、传递过程中的信息加工。

The concept of mobile learning is often defined as learning that takes place with the help of mobile devices to access course materials everywhere and at anytime;

移动学习就是通过移动设备可以在任何时间任何地点进行的学习[1][2][3]；

She doesn't have a levels, but took an access course to get into university.

她没有高级证书，但读了预科课程以进入大学。

The effect of changing the size of access hole on the behavior of steel beam-column moment connections is studied through3D nonlinear finite-element analyses of connection subassemblies.

对焊接孔尺寸变化的钢框架梁柱刚性节点进行了空间非线性有限元分析。

The research has proved the performance advantage of the connection without weld access hole. However, as a new type connection, it is going to be researched in depth.

本研究已初步证明该类节点的性能优势，作为一种新型节点，还有待于更深入的研究。

For the improvement of earthquake resistant property is not obvious and the bearing capacity is pretty low, the connection with enlarged access hole is not recommended.

焊接孔扩大型节点对于抗震性能的提高效果不明显，而且由于其结构整体的承载力较低，因而并不可取。

The fracture potential of the root of the access hole is greatly reduced through improving the configuration of access hole.

通过改进工艺孔的形式可以显著降低焊接孔根部发生断裂的可能性。

Comparison on Methods of Anti-percolation of Anaerobic Digester Access Hole

厌氧消化池人孔防渗方案的比较

Weld access hole geometry and size have significant effect on ductility and failure mode of the connection.

节点局部构造尤其是焊接孔形状尺寸对于节点应力集中情况和节点破坏模式有很大影响。

Effect of Length of Access Hole on Behavior of Steel Beam-column Moment Connections

焊接孔长度对钢框架梁-柱刚性节点性能的影响

The entrance for pedestrians is generated through the first volume, where a pleated corner marks the entrance to the building and shows the access ramp.

步行者入口设置在第一座建筑物当中，位于建筑物一角的褶皱标示了入口坡道的存在。

A Study on Tunneling Technology with Access to Tunnel for Shield

隧道建设盾构进出洞施工技术研究