查询词典 natural

The natural frequency can be calculated using the numerical value method for the equation and a facility method to solve the natural frequency of chain structures is obtained.

建立了随机性结构参数的链式机械系统动力特性分析模型，利用Monte Carlo数值模拟方法获得系统的特征值随机变量的数字特征。

The NEW Adiri Natural Nurser Ultimate Bottle The Natural Nurser is 100% Bisphenol-A free!

全新的终极Adiri奶瓶是百分之百不含BPA的！

T Boone Pickens , the 81-year-old oilman who has become a spokesman for the natural-gas industry, told the US congress in October that the United States has more natural gas than all the oil in Saudi Arabia.

他10月份的时候告诉美国国会，美国的天然气储量比沙特阿拉伯的全部石油还多。

The natural vocalizations of non-passerine(Columbia livia domesticus, Chicken), sub-oscinepasserine(Melopsittacus undulates. Psittacula Agapornis), Oscine passenon and the vocalizations of sub-oscine passerine(Melopsittacus undulates, Psittacula Agapornis) after sectioning NXIIts were recorded by SHARP GF-6060 recorder. Cooledit2000, an acoustic analyzing software, was used to produce the original wave and it\'s expanded time windows, sonograms, spectrums and power static histograms. To distinguish the acoustic differences of their natural vocal and to find the changes of sub-oscine passerine\'s song after sectioning NXIIts, the above results is acoustically analyzed and compared, expecting to provide some advantage to further explaining the mechanism of vocal production.

本实验以非鸣禽，亚鸣禽以及鸣禽为实验材料，记录其正常叫声以及亚鸣禽断NXIIts后的叫声，用Cooledit2000声音处理软件制出原始信号及其展开图，声图，频率谱图以及能量统计分布图，并对所得结果进行声学比较分析，以期得到鸣禽、亚鸣禽及非鸣禽叫声在声学特性上的差异，以及亚鸣禽在断神经后叫声的声学变化，旨在为进一步解释其发声机制提供帮助。

Along with many new materials and techniques,helium abstraction technologies from natural gas have been innovated like the adsorption and membrane osmose process have developed fast and coproduction and combined technologies have a good application prospect, which provide new thoughts for the development of helium abstraction technologies from natural gas.

随着新材料、新技术的发展，天然气提氦技术不断改进创新，吸附法、膜渗透法等提氦工艺发展迅速，联产法、联合法工艺有着良好的应用前景，这些都为促进天然气提氦技术的发展提供了新的思路。

Through analysis on the present technologies, this study discovered that low-temperature condensation is a relatively matured method with high cost and highly-consumed energy; the other methods like adsorption, absorption and membrane osmose process are differently characterized by many features hut have not been applied in industrial use for many reasons, Along with many new materials and techniques, helium abstraction technologies from natural gas have been innovated like the adsorption arid membrane osmose process have developed fast and co-production and combined technologies have a good application prospect, which provide new thoughts for the development of helium abstraction technologies from natural gas.

通过对目前提氦技术的分析介绍，低温冷凝法较为成熟，但能耗、成本较高；吸附法、吸收法和膜渗透法等其他提氦技术各其特点，但目前限于适用条件尚不能规模化工业应用，随着新材料、新技术的发展，天然气提氦技术不断改进创新，吸附法、膜渗透法等提氦工艺发展迅速，联产法、联合法工艺有着良好的应用前景，这些都为促进天然气提氦技术的发展提供了新的思路。

The reason is the overdevelopment to natural resource and the violation to natural laws, human demands exceeded global ability to bear.

这原因来自人类自身，人类过度开发自然资源，违背自然规律办事，人类的各种负载超过了地球的承受能力。

When a society has discovered', Marx writes in Capital, 'the natural law that determines its own movement…even then it can neither overleap the natural phases of its evolution, nor shuffle them out of the world by a stroke of the pen.

马克思在《资本论》中这麼写道：「当社会发现了这个决定社会发展的自然法则之后，它既无法跳过应有的自然阶段，也不可能藉著外力来规避应有的社会进程，但它却能缩短或减轻分娩的痛苦。

Therefore, Jiuzhaigou is not only a charming place of natural beauty, but also a desire place for research into natural ecology, biological evolution, paleogeography and paleoclimatology.

九寨沟栖息着几十种珍稀动物，如大熊猫，小熊猫(lesser 九寨沟栖息着几十种珍稀动物，如大熊猫，小熊猫 panda)，金丝猴，羚羊金丝猴，羚羊等。

In Britain, William Paley's Natural Theology saw adaptation as evidence of beneficial "design" by the Creator acting through natural laws.

在英国，威廉·佩利的自然神学认为，适应是造物主通过自然法则进行有益的"设计"的证据。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。