Qualitative spatial reasoning ( QSR) is an important component of qualitative reasoning and spatial reasoning.

Topology and shape are key problems in QSR research.

拓扑和形状是定性空间推理研究的关键问题。

Compared to conventional hard-switched converters with fixed switching frequencies, the quasi-resonant converter ( QRC) topology is a very attractive alternative for power supply designers.

相对于拥有固定开关频率的传统硬开关转换器，准谐振变换器技术更有吸引力。

A reduced-order model and a full-order circuit model for frequency modulation ( FM) quasi-resonant converters ( QRC) are introduced.

提出了调频准谐振变换器的降阶及全阶模型（第七章）。

An improved zero-current-switched ( ZCS) quasi resonant converter ( QRC) using a saturable inductor

一种非线性零电流准谐振变换器

Modeling and simulating for zero-current-switching ( ZCS) quasi-resonant ( QRC) converters based on MATLAB

基于MATLAB的对零电流开关（ZCS）准谐振变换器（QRC）的建模与仿真

The paper presents a method to obtain and optimize the parasite parameters of the PCB in HB QRC converter for better EMC performance.

为改善印刷电路板线路的电磁干扰性能，提出了一种半桥准谐振变换器印刷电路板寄生参数的提取及优化的方法；

Based on the basic principles and market needs, A QRC chip& FT8401 was designed. The paper gave the circuit implementation process details.

根据基本原理和市场需求，设计了一款准谐振控制芯片FT8401，并详细介绍了电路的实现过程。

A ZCS QRC BUCK circuit with nonlinear inductor is proposed.

提出一种采用非线性电抗器的ZCS－QRC电路。

Through comparing analysis of the simulation results, the limitation of QSS simulation and the applicability of FHD simulation are proved.

通过对仿真结果进行对比分析，证实了QSS仿真的局限性和FHD仿真的适用性。

The first one is a ( n-1, n) threshold QSS protocol based on entanglement swapping.

第一种是基于纠缠交换的（n-1，n）门限量子秘密共享。

The QSS converter model in account of unsymmetric commutating voltages is developed for DC system.

对直流系统开发了计及换相电压不对称的QSS换流器模型。

The details are as follows: With respect to the design, we propose two QSS protocols.

具体如下：在协议设计方面，提出了两种秘密共享协议。

Further more, the scheme for realizing QSS in cavity QED is also proposed.

在此基础上，还提出了量子秘密共享的腔QED实现方案。

For QSS problem, we proposed the preference based initialization strategies.

针对QSS问题，提出了基于偏好的初始化策略。

Based on this character of QSS, we design two participant attack strategies.

针对这一特点设计了两种参与者攻击策略。

The differences of the acoustic diffusion when terraces, QRD and absorptive material of distinct parameters are employed on the ground, the ceiling and the rear wall respectively are discussed.

讨论了在地板、天花板和后墙分别安装阶梯以及不同参数的二次余数扩散体和吸声材料时，声场扩散性的改变。

The Highest Level of Chinese Non-recovery Coking Technique& Introduction of the QRD Anthracite Clear-type Thermal-recovery Stamping Mechanical Coke Oven

中国无回收炼焦技术最高水平&QRD无烟煤清洁型热回收捣固式机焦炉介绍

Quadratic residue sequence diffuser ( QRD) is a very widely used sound diffusion structure, as for its simple structure, convenient proliferation and excellent diffusion performance.

二次剩余序列扩散板是一种应用非常广泛的声扩散结构，其结构简单、制造方便并且扩散性能优良。

To study the effect of Qianggan Ruanjian decoction ( QRD) on hepatocirrhosis portal hypertension and its possible function mechanism.

探讨强肝软坚方对肝硬化门脉高压症的作用及其可能机制。

Methods: The nerve conduction velocity ( NCV) and QST were examined in 136 diabetic patients and 118 normal controls, and their results were compared.

方法：应用QST仪检测118名正常人与136例DPN病人的冷觉（CS）、热觉（WS）和振动觉（VS）阈值及神经传导速度（NCV）。