Then the relations among the classes of regular semigroups satisfying ( IT),( IST),( QIT) and ( QIST) are studied, and description for the classes of the ist_ ( qist)_regular semigroups are given.

Quantum entanglement lies at the heart of quantum information theory ( QIT), and it also plays a very important role in many kinds of interdisciplinary subjects of science. Today, more and more people do research on entanglement because of its importance.

量子纠缠作为量子信息理论（QIT）的核心内容，在各种交叉学科中具有重要的影响与作用，已经吸引着越来越多的科研工作者去深入的研究与探索。

QIT ( Quality Improvement& Innovation team) can be defined as: a cross-function task team in manufactory industry, such teams' purpose is to solve major technology issue or advanced design project with high efficiency.

QIT团队可以被定义为在制造行业的跨功能任务团队，团队的任务是解决重大的技术问题或者完成高新的设计课题。

Recently, quantum information theory ( QIT) has become one of frontier areas in physics and information science.

目前量子信息论已经成为现代物理学和信息科学的重要前沿领域。

Using domestic fiber component to build a QKD network

用国产光纤器件为量子密钥传送建立网络

The security condition of QKD system is summarized according to the different schemes.

其次，主要研究了逆向协调和后选择协调两种协调方案，根据不同协调方案对密钥分发系统的安全条件进行了总结。

A highly stable differential phase shift key distribution QKD system

高稳定的差分相位编码量子密钥分发系统

Research on extending quantum key approach based on QKD systems

基于QKD系统的扩展量子密钥方法研究

Security Research of Practical QKD System Based on Weak Coherent Light

基于弱相干光的实际QKD系统的安全性研究

In theory, QKD holds the key to unconditional security in communications, which make the traditional cryptography fell small.

理论上，量子密钥分配可以保证通信过程中密钥的绝对安全性，因此使得传统密码术自惭形秽。

The QKD network is one of the research focuses nowadays.

量子密钥分配网络是当前国际上研究的热点之一。

The changes of brain muscarinic cholinergic receptor density of rats in early and late stage of aging were studied. An autoradiographic technique with 3H QNB was used as radioactive probe to study the changes of M receptor density in brain slices.

采用放射自显影技术测定脑切片胆碱能M型受体，观察大鼠在老年早期和老年晚期不同脑区M型受体密度的变化。

The effects of tetrandrine, berbamine and some other tetrahydroisoquinolines on [~ 3h] QNB binding to M-cholinergic receptors in rat brain

粉防己碱，小檗胺等四氢异喹啉类生物碱对大鼠脑内M-胆碱受体的作用

In the radioligand-receptor binding experiments, we extracted receptor from 10 rat's cerebra, then the competitive binding of DC and QNB to the receptor was studies.

在放射性配体-受体结合实验中，从10只大鼠大脑中提取受体，通过DC与[3H]QNB的竞争结合作用，研究了DC对毒蕈碱性受体的作用。

The effects of y-irradiation on both intestinal contraction and muscarinic cholinergic receptor binding ability with [~ 3h]-qnb in guinea-pig ileum

丙线照射对豚鼠回肠收缩反应和[~3H]-QNB特异性结合的影响

The binding activity of quinuclidinyl benzilate ( qnb) and some cholinergic agents on muscarinic cholinergic receptor in rat brain

二苯羟乙酸-3-喹咛环酯（QNB）等与大白鼠脑内毒蕈碱样乙酰胆碱受体的作用

Conclusion QNB administration can play prophylactic or therapeutic roles in ALI induced by PFIB inhalation, which may involved in ameliorating pulmonary microcirculation.

结论QNB对PFIB吸入肺损伤具有预防和治疗作用，可能与改善微循环有关。

Influence of Electroacupuncture and Capsaicin Treatment on AChE Activity and [~ 3H]-QNB Binding Sites in the Spinal Dorsal Horn

电针及辣椒素处理对脊髓后角AChE活性和[~3H]-QNB结合位点的影响

In this paper, the fuel spray penetration, cone angle and droplet size distribution of a conical nozzle are investigated by using laser technique, qnd the fuel spray characteristics of the conical nozzle are compared with those of multihole nozzles.

本文应用激光技术对伞喷喷油嘴的喷雾贯穿距离、喷雾锥角、喷雾粒径及其分布等进行了研究，并对伞喷喷油嘴与多孔喷油嘴的喷雾特性进行了比较。

Based on the theory proposed by Walls et al, an experimental scheme of quantum non demolition ( QND) measurement for intensity difference fluctuations is put forward, which is realized though a nondegenerate optical parametric amplifier.

提出了一种强度差起伏量子非破坏性（QND）测量的实验方案，该方案通过一个非简并光学参量放大腔实现。

We give out the maximal limit of the beam splitter's loss when the input probe is a nonideal squeezed light and the system can implement QND measurment.

给出当输入探测光的量子起伏为某一确定值时，要实现量子非破坏性测量分束器损耗的上限值。