模拟实验

In this paper, the biomasses of 4 types of shrublands,such as Myrsine africana,Loropetalum chinense,Vitex negundo and Cotinus coggygria,and their responses to cutting were investigated with harvest method and cutting experiment.

本文采用收获法和模拟砍伐实验研究了三峡地区铁仔灌丛、木灌丛、荆条灌丛和黄栌灌丛的生物量及黄栌灌丛、木灌丛地上部分砍伐后的再生能力。

It is validated by experiments, simulation and theoretic calculation that the macroscopical circuit model of plasma load of AIP and its relationship with microcosmic parameters of plasma is effective.

通过实验、仿真模拟和理论计算，验证了建立的电弧离子镀等离子体负载的宏观电路模型及其与等离子体微观参数间的关系是有效的。

In addition, the ventilation e2ciency, local mean age of air and other characteristic parameters were experimentally and numerically obtained for a mock-up classroom ventilated with the two systems.

另外，通风e2ciency，当地平均年龄航空等特性参数进行了实验，并取得了数值模拟出教室通风与两种制度。

The method of experiment and computer simulation can be adopted when the unit of air source heat pump is investigated.

研究空气源热泵冷热水机组的性能可采用实验方法和计算机模拟方法。

At last the comparative signal-to-noise test results between this method and ALIA are presented.

最后，给出了这种方法与原模拟锁相放大器的信噪比对比测试实验结果。

The physical model of polarizing beam coupling and splitting system using altazimuth coude telescope is built up based on Mueller matrix and Stokes vector. The phenomena of the decreasing of the receiving efficiency are successfully explained by this model. Three dynamic phase compensation solutions are proposed: 1 Two quarter-wave plates are rotated to compensate the phase of the laser.

针对这个问题，建立了地平式折轴望远镜的共孔径偏振耦合分光模型，用Stokes矢量和Mueller矩阵分析了在望远镜旋转过程中激光偏振态的变化，数值模拟计算了望远镜处于不同方位角和天顶角时的偏振耦合分光效率，解释了实验中观察到的望远镜旋转导致偏振耦合分光效率退化的现象。

The results of the theoretic analysis and the experiments show that the method can simulate the Raman amplification exactly.

理论分析结果和实验结果均显示该算法可以准确模拟拉曼放大过程。

Firstly, the design and implementation of Analog Channel in CR system is introduced, which takes on the responsibility of power control, dynamic frequency switch, and receive terminal for authorized user detection.

本文首先在认知无线电实验系统中设计并实现了模拟通道，其任务包括执行功率控制和动态频谱切换的功能，以及作为授权用户检测的接收通道。

In order to meet the higher requirements for some scientific experiment due to site conditions limitation for data acquisition system's volume,power consumption and reliability,a real-time data acquisition system based on TMS320F2812 chip was designed,which could carry out real-time acquiring and recording for analog signals output from power system.

为了满足有些科学实验由于现场条件的限制对数据采集系统的体积、功耗以及可靠性等方面所提出的较高要求，设计了一种基于 TMS320F2812芯片的实时数据采集系统，该系统可对电力系统所输出的模拟电压信号进行实时的采集和记录。

The current methods for the study of physic process of the geofluid's movement mainly consist of qualitative analysis, numerical simulation and analogue experiment.

流体输运物理规律的研究方法主要包括定性分析、定量模拟和相似物理实验等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。