quasi-harmonic system

The research method used for system assessment is quasi-experimental design. The experiment adopts nonequivalent-control group design.

本研究所利用系统评估的研究方法为准实验研究, 实验设计采不等组前测-后测设计.

This paper presents quasi-dimensional models to treat the boundary conditions of fuel injector and distributor. A new model for fuel injecting pump in numerical simulation of the circulating type fuel system suitable for inferior fuel ( heavy fuel) is presented as well.

本文数值仿真了一种适合劣质燃油（重油）的循环式燃油系统（一泵二嘴四针阀），提出了处理喷油器和燃油分配器边界条件的准维模型以及用于喷油泵边界条件的新模型。

Quasi-keyhole arc welding process is a typical nonlinear system.

准小孔弧焊接过程是个典型的非线性系统.

The stored grain can maintain quasi-low temperature state if the solar energy colling system is put into operation before the mean temperature at top layer of grain rises to about 15~ 20 ℃.

在仓内上层平均粮温回升到15~20℃前将太阳能制冷系统适时地投入运行，能够实现准低温储粮。

In this paper, concepts of a linear time-invariant system are presented, including quasi-sliding mode ( ideal and nonideal quasi-sliding modes) and quasi-sliding sector.

研究了滞后离散线性定常系统的准滑模变结构控制问题，给出了滞后离散线性定常系统的准滑模，理想准滑模，非理想准滑模与准滑模带的概念；

Quasi-synchronizing parallel is an important operation in the power system.

自准同期并网操作是电力系统中一项基本操作.

Calculation of the Valve Value Rate of the Quasi Three-Level System and the Analysis of the Intracavity Frequency Multiplier Theory

准三能级的阀值功率计算及倍频理论

Attempt construction quasi-fixed structure pattern-form-case three-level system, from three different level inspection quasi-fixed structure nature and constitution.

尝试建构类固定短语型式格式语例三级体系，从三个不同层级考察类固定短语的性质和构成。

Under Quasi-static approximation, based on the non-diluted condition, the analytical expression of the effective dielectric constant and third-order nonlinear susceptibility of granule composite system was obtained in our research.

在准静态近似下，我们推导得出非稀释情况下，颗粒复合体系的有效线性介电常数和有效三阶非线性极化率的解析表达式。

Third-order nonlinear susceptibility x ( 3) (-ω; ω,ω,-ω) is calculated in nearly-degenerate quasi-two-level system by perturbation method.

我们用微扰方法计算了近简并准二能级系统的三阶非线性极化率x~（3）（-ω；ω，ω，-ω）。