The Monthly Energy Review (MER) is the U.S. Energy Information Administration’s (EIA) primary report of recent and historical energy statistics. Included are statistics on total energy production,consumption, trade, and energy prices; overviews of petroleum, natural gas, coal, electricity,nuclear energy, renewable energy, and international petroleum; carbon dioxide emissions; and data unit conversions. 

关键词：能源；煤炭；电力；核能；石油

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关键词：整形外科；美国；市场分析；2018

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In 2008, the National Renewable Energy Laboratory (NREL), under contract to the US Department of Energy (DOE), conducted a manufacturing readiness assessment (MRA) of fuel cell systems and fuel cell stacks for back-up power and material handling applications (MHE). To facilitate the MRA, manufacturing readiness levels (MRL) were defined that were based on the Technology Readiness Levels previously established by the US Department of Energy (DOE). NREL assessed the extensive existing hierarchy of MRLs developed by Department of Defense (DoD) and other Federal entities, and developed a MRL scale adapted to the needs of the Fuel Cell Technologies Program (FCTP) and to the status of the fuel cell industry. The MRL ranking of a fuel cell manufacturing facility increases as the manufacturing capability transitions from laboratory prototype development through Low Rate Initial Production to Full Rate Production. DOE can use MRLs to address the economic and institutional risks associated with a ramp-up in polymer electrolyte membrane (PEM) fuel cell production. In 2010, NREL updated this assessment, including additional manufacturers, an assessment of market developments since the original report, and a comparison of MRLs between 2008 and 2010.

关键词：燃料电池；后备电源;；聚合物；制氢

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HVAC control systems are required to efficiently manage HVAC equipment. They help in reducing energy consumption and enhance the performance of an HVAC unit. There are various types of HVAC control systems including sensors, field devices, floor-level controllers, and building-level controllers. These HVAC control systems are used in the Commercial and Residential sectors worldwide.

关键词：HVAC；控制系统；HVAC设备；降低能耗；提高性能

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Dimming mirrors were initially introduced in fighter aircraft to reduce brightness. Gentex was credited with the first electromechanical dimming rearview mirror in 1982. Auto dimming mirrors reduce annoying glare at night that can impair vision.

关键词：防眩目后视镜；战斗机；降低亮度；汽车自动调光镜

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Forging is a process in which metals are shaped into desired designs by applying compressive forces. This technique is very robust compared to a number of other metal shaping techniques because of the strength acquired by the metal during forging. Some metals are processed hot while others are processed cold. There are a number of forging methods such as closed die, press, and upset forging; open die forging; cold forging; and closed die forging for non-ferrous metals. The Automotive industry is the major end-user of forged products followed by Engineering Machinery and Railway industries.

关键词：锻造；金属；压缩；所需图案；金属成形技术

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This report analyzes the potential economic impacts in Colorado and Wyoming of a 225 MW natural gas fired electricity generation facility and a 900 MW wind farm constructed in Wyoming as well as a 180 mile, 345 kV transmission line that runs from Wyoming to Colorado. This report and analysis is not a forecast, but rather an estimate of economic activity associated with a hypothetical scenario.

关键词：风能；风力发电厂；输电线路；联合循环发电厂

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Clean coal refers to the process of reducing carbon emissions and other harmful pollutants that arise from the burning of coal for power generation to the minimum possible level. SC, USC, and IGCC technologies are clean coal technologies that are widely used for setting up new-build coal-fired power plants. The more sophisticated the technology, the higher the steam pressure and temperature requirement is for operating the plant. As a result, the thermal efficiencies improve with the usage of more sophisticated technology. As well as these three technologies, CCS is also an upcoming technology, which is capable of reducing carbon emissions drastically by 80-90 percent. This technology is used in conjunction with SC, USC or IGCC plants.

关键词：清洁煤；减少；碳排放；源于；燃煤发电

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This report covers the present scenario and the growth prospects of the Global Forklift Trucks market for the period 2014-2018.

关键词：叉车；材料；货装卸过

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A bone densitometer is an X-ray device used to measure the calcium content of the bone.

关键词：骨头密度计；测量；骨质；钙含量；X射线

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