1) enclosed space
封闭空间
1.
In this paper,a theoretical study on active control of within enclosed space surrounded by flexiblestructure is accomplished.
本文从理论上研究了外力激励弹性结构条件下封闭空间有源消声问题。
2.
Based on the basic theory of ANC within the enclosed space,this paper models the enclosed space with the COMSOL software,and presents the simulation and analysis effects of noise reduction which is derived from the numbers and location of the secondary noise resources.
基于封闭空间有源消声的基本理论,利用COMSOL软件对封闭空间声场进行了仿真建模,并模拟分析了次级声源的数量和位置关系对消声效果的影响。
2) closed space
封闭空间
1.
By applying the basic principle of thermodynamics, the expression of characteristic index B to the humidity control in a closed space is derived and is analysed and explained from the angle of two phase equilibrium.
在评述现有关于调湿材料的调湿特性指标的基础上 ,利用热力学基本原理 ,从两相平衡的角度导出封闭空间调湿特性指标值的表达式 ,并对其进行分析说明 。
3) closed cavity
封闭空间
1.
The result of the numerical simulation of heat dissipation in a closed cavity is compared with the experiment result.
首次用组合坐标法对小空间自然对流换热问题进行数值模拟，并将封闭空间电缆群散热情况数值模拟的结果与实验结果比较，在所比较的工况点上，计算值与实验值相差小于５％。
4) enclosure
[英][ɪn'kləʊʒə(r)] [美][ɪn'kloʒɚ]
封闭空间
1.
Optimal strategy for the second source in enclosure under active noise control
封闭空间有源噪声控制次级声源优化策略
2.
Active control of structural acoustic radiation into an enclosure based on radiation modes
通过辐射模态研究封闭空间结构声辐射及其有源控制
5) hermetic and half-hermetic spaces
封闭、半封闭空间
1.
The acoustic eigen frequencies of the hermetic and half-hermetic spaces and its change with dimensions of the clapborad are simulated.
通过分析封闭、半封闭空间中气体的声学特性,针对当其固有声学频率与激振频率一致时,由于气体共振产生的共鸣音,提出了移频降噪理论。
6) semi-closed space
半封闭空间
1.
In order to understand the mechanism of smoldering of polyurethane foam in a semi-closed space,experiments are conducted with horizontally-oriented polyurethane foam.
为了了解在半封闭空间中阴燃的机制,对水平放置在实验体中的聚氨酯泡沫进行了阴燃实验研究。
补充资料：“自由市场”和封闭性的市场
自由市场亦称为开放性市场，是指商品的生产、销售或购买的集中程度不高，其变动主要受市场的自发力量即价值规律的作用支配，商品价格是在相对自由竞争的条件下形成的，但仍在程度不同的受到垄断的影响。
封闭市场是垄断控制型市场，在这种市场上，垄断者竭力限制竞争和供求自发的波动，使商品供求和价格按照自己希望的方向发展变化，获取高额利润。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条