Three issues need to be paid attention on the use of hydrogen, which are hydrogen energy extraction, storage and transportation and application.
氢能的利用需要解决三个问题：氢能的制取、储运以及应用。
The history of energy extraction has been marked by a number of disasters that have driven change: Piper Alpha, Three Mile Island, Chernobyl, and the Exxon Valdez to name but a few.
能源开采的历史一向以一系列推动变化的灾难为里程碑：帕玻尔·阿尔法钻井平台爆炸、三里岛核事故、切尔诺贝利核泄漏事故，以及埃克森·瓦尔迪兹号溢油事故。
If you parse the data, however, you'll find that the increase was almost all concentrated in oil-producing counties, where more than 6% of employment was dependent on energy extraction.
如果仔细分析一下这一数据，你会发现，这种上升几乎全部集中在一些产油地区，而这些产油区有6%的就业率依赖于能源开采。
Coal is indeed a cheap source of energy, but its extraction is extremely costly to the environment.
煤炭其实是一种成本低廉的能源，但对它的采挖却耗资巨大。
The peaceful extraction of these fossil fuels could drive down the price of energy for the four nations and also the rest of the energy-dependent world.
化石能源的和平开采不仅可以降低四国的能源价格，而且全世界依赖石油的国家也受益。
Microwave extraction can shorten extraction time, increase extraction yield, but energy consumption and product cost are high.
微波萃取法可缩短萃取时间，提高提取率，但耗能大，成本高。
The study of signature energy feature extraction method is emphasized.
侧重签名能量特征提取方法的研究。
In this paper we introduced the speech signal feature parameters, the speech signal feature parameters selection, and introduced short-term energy, short-term average range extraction.
本文对语音信号特征参数、语音信号特征参数的选择进行了介绍，并介绍了语音信号的短时能量、短时平均幅度的提取。
Due to high temporal and frequency resolution and high energy focus, the accuracy of fault signal feature extraction is greatly improved by WVD.
WVD很高的能量聚集性和很好的时频分辨率，极大地提高了故障信号特征提取的准确度。
Then, on the basis of this method, an adaptive target extraction method based on the normal distribution of the local energy of a target is proposed.
在此基础上提出了一种基于目标局部能量正态分布的自适应目标提取方法。
By studying the principle of hearing system in identification of sound signal, a method of feature extraction for passive sonar target based on critical band spectrum energy is proposed.
利用被动声纳目标辐射噪声特征主要集中在低频部分的特点，结合听觉系统识别声音信号的原理，提出了一种被动声纳目标临界频带频谱能量的特征提取方法。
The extraction efficiency of organic light-emitting diode(OLED) is restrained by the high fraction of energy of the guided wave in the high-index materials(ITO/organic).
有机发光二极管（OLED）发光效率很大程度上受到器件中高折射率材料（ITO/有机物）对导波光能量的制约。
The concept of local energy in time-frequency plane, based on local wave theory, is defined. Then a new feature extraction method based on the local energy in time-frequency plane is given.
在局域波理论的基础上，引入了时频局部能量的概念，进而提出了一种基于时频局部能量的特征提取方法。
Investigates energy function minimization process for eye feature extraction based on deformable template.
研究眼睛特征提取过程中可变形模板中能量函数优化方法。
Ultrasound extraction was high efficiency, rapid and saving energy, and was the best extraction methods.
超声提取高效、省时、省能源，是比较好的提取方法。
According to the need of the rhythm detection and energy output, a music rhythm extraction system based on MCU is proposed in the paper.
针对通过MCU系统实现音乐节奏提取和能量输出的需求，本文构建了一个基于MCU硬件的音乐节奏提取系统。
Firstly, a TF region extraction method based on energy threshold is designed to identify the clustered energy of the signaland to extract the regions in TF plane occupied by clustered energy;
首先，设计了一种基于能量阈值的时频区域提取方法，识别出信号在时频面上的能量峰，并提取出能量峰所占据的时频区域；
The special feature of microwave extraction technique over traditional heat extraction is short time, low temperature, low energy consumption and high product quality.
微波辐射提取技术与传统加热提取技术相比，具有提取时间短、温度低、耗能低、品质高等优良特性。
Shanghai Macro-E energy-saving Tech. Co. , Ltd. is committed to being the best total solution provider of bio-extraction and fermentation production line.
上海朗诣节能技术有限公司致力于成为最好的生物萃取、发酵生产线整体解决方案提供商。
We have to invent a process, a chemical extraction process that will make the production of magnesium cheaper so that we will have the opportunity to avail ourselves of energy-efficient materials.
我们必须发明出一种方法，一种化学提炼方法，能够使生产镁变得更便宜，那样我们才有机会，让我们自己用上高效能的材料。
The heat balance of butadiene extraction unit by acetonitrile is analyzed, and Suggestions for reducing energy consumption of butadiene extraction unit are pro - posed.
通过对乙腈法丁二烯抽提装置热平衡分析，提出了节能降耗的合理化建议。
Conclusion extraction technology of Puerarin by largescale ultrasonic extraction can decrease extraction temperature, reduce extraction time and save energy.
结论中试型超声提取机提取葛根素，可以降低提取温度，缩短提取时间，节省能源。
The system structure and performance is also given. It presents speech compression algorithm implemented by High Energy Wave Extraction. It also gives out hardware interface and software structure .
介绍了系统结构、性能以及用高能谐次波提取法实现语音压缩的算法，并给出了硬件接口与软件结构设计方案。
Speeding up moisture extraction rate, shortening drying time, and saving energy consumption have always been the hot topics of the research on drying process.
加快干燥除湿速度，缩短干燥时间，节约干燥能耗，一直是干燥研究的重要课题。
Abstract: The residue of cottonseed after oil extraction processing known as cottonseed meal is a fairly good source of protein and metabolizable energy.
摘要：棉籽粕为工业提取棉籽油后的残渣，含较高粗蛋白质和代谢能，是家禽饲粮中较理想的豆粕替代品。
Abstract: The residue of cottonseed after oil extraction processing known as cottonseed meal is a fairly good source of protein and metabolizable energy.
摘要棉籽粕为工业提取棉籽油后的残渣，含较高粗蛋白质和代谢能，是家禽饲粮中较理想的豆粕替代品。
In this paper, influential factors were approached extraction of lignin; optimum conditions were determined. It is a conserve energy and environmental protection clean production new technology.
探讨了木质素提取的影响因素，确定最佳工艺，并证明其是一项节能又环保的清洁生产新技术。
Compared with other hydrogen extraction processes the double ammonia synthesis process for purge gas treated with liquid ammonia absorption is a simpler process with low operation energy consumption.
液氨吸收法弛放气二次氨合成工艺流程较之其他提氢流程，工艺简单，操作能耗低。
Compared with other hydrogen extraction processes the double ammonia synthesis process for purge gas treated with liquid ammonia absorption is a simpler process with low operation energy consumption.
液氨吸收法弛放气二次氨合成工艺流程较之其他提氢流程，工艺简单，操作能耗低。
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