2613 篇
1075 篇
264385 篇
3265 篇
6305 篇
2228 篇
2769 篇
537 篇
29522 篇
9423 篇
3131 篇
747 篇
2294 篇
1314 篇
449 篇
752 篇
1387 篇
2597 篇
2736 篇
3996 篇
[化学纤维制造业,铁路、船舶、航空航天和其他运输设备制造业,化学原料和化学制品制造业] [2020-08-30]
Fibers are a source of reinforcement in engineering polymer composites, responsible for strength and stiffness. As in composites, stress is transferred from fiber to polymer and vice versa, and high mechanical properties are only acquired if appropriate compatibility exists between the matrix and reinforcement. The aviation industry generates around 2-3% of all human-induced Co2 emissions and 12% of the emissions of the transportation industry. The higher consumption of fuel in the aircraft leads to larger emissions of greenhouse gases and contributes to global warming. Moreover, the higher level of fuel consumption leads to higher cost, thus, increasing the operational cost of airlines. The aerospace industry is constantly focusing on producing fuel-efficient, lighter, yet stronger materials. Thus, the industry has shifted from using aluminum, steel, and titanium to composites. Currently, the use of composites has reduced around 50% of the structural weight of the aircraft, thus, increasing the fuel efficiency to around 20% and reducing the noise by around 5%, as well as decreasing the maintenance cost by around 30%.
[化学纤维制造业,铁路、船舶、航空航天和其他运输设备制造业,化学原料和化学制品制造业] [2020-08-30]
Fibers are a source of reinforcement in engineering polymer composites, responsible for strength and stiffness. As in composites, stress is transferred from fiber to polymer and vice versa, and high mechanical properties are only acquired if appropriate compatibility exists between the matrix and reinforcement. The aviation industry generates around 2-3% of all human-induced Co2 emissions and 12% of the emissions of the transportation industry. The higher consumption of fuel in the aircraft leads to larger emissions of greenhouse gases and contributes to global warming. Moreover, the higher level of fuel consumption leads to higher cost, thus, increasing the operational cost of airlines. The aerospace industry is constantly focusing on producing fuel-efficient, lighter, yet stronger materials. Thus, the industry has shifted from using aluminum, steel, and titanium to composites. Currently, the use of composites has reduced around 50% of the structural weight of the aircraft, thus, increasing the fuel efficiency to around 20% and reducing the noise by around 5%, as well as decreasing the maintenance cost by around 30%.
[化学纤维制造业,铁路、船舶、航空航天和其他运输设备制造业,化学原料和化学制品制造业] [2020-08-30]
Fibers are a source of reinforcement in engineering polymer composites, responsible for strength and stiffness. As in composites, stress is transferred from fiber to polymer and vice versa, and high mechanical properties are only acquired if appropriate compatibility exists between the matrix and reinforcement. The aviation industry generates around 2-3% of all human-induced Co2 emissions and 12% of the emissions of the transportation industry. The higher consumption of fuel in the aircraft leads to larger emissions of greenhouse gases and contributes to global warming. Moreover, the higher level of fuel consumption leads to higher cost, thus, increasing the operational cost of airlines. The aerospace industry is constantly focusing on producing fuel-efficient, lighter, yet stronger materials. Thus, the industry has shifted from using aluminum, steel, and titanium to composites. Currently, the use of composites has reduced around 50% of the structural weight of the aircraft, thus, increasing the fuel efficiency to around 20% and reducing the noise by around 5%, as well as decreasing the maintenance cost by around 30%.
[电力、热力、燃气及水生产和供应业,仪器仪表制造业] [2020-08-30]
The global high voltage cable market is segmented on the basis of type of cable, end user, and region. The type segment includes overhead, underground, and submarine cables. Among the three types of cable, the underground high voltage cable segment holds significant share in the global high voltage cable market, owing to its high accuracy in terms of power loss as compared to overhead cables. However, the submarine cable is expected to witness the fastest growth during the forecast period. The end user segment is further divided into the industrial, renewable energy, and infrastructure segments.
[电力、热力、燃气及水生产和供应业,仪器仪表制造业] [2020-08-30]
The global high voltage cable market is segmented on the basis of type of cable, end user, and region. The type segment includes overhead, underground, and submarine cables. Among the three types of cable, the underground high voltage cable segment holds significant share in the global high voltage cable market, owing to its high accuracy in terms of power loss as compared to overhead cables. However, the submarine cable is expected to witness the fastest growth during the forecast period. The end user segment is further divided into the industrial, renewable energy, and infrastructure segments.
[石油加工、炼焦和核燃料加工业,化学原料和化学制品制造业] [2020-08-30]
Graphene, the first 2-D carbon material in the world, also known as the "wonder material," is well suited for many applications. Graphene is resistant to fire, an effective conductor, extremely versatile and 200 times stronger than steel and a substance of ultra-lightness. In addition, graphene is regarded in the chemical industry as an effective catalyst because of its properties such as high surface area and adsorption power. Growing demand for chemicals worldwide is expected to increase graphene demand and thus, drive the growth of the global graphene industry. The report on graphene exclusively focuses on current market trends and future growth opportunities of various types of graphene such as mono-layer & bi-layer graphene, few layer graphene, graphene oxide, and graphene nano platelets. Based on application, the market is divided into RFID, composites, sensors, research & development, energy storage, functional ink, and polymer additives. Based on region, it is studied across North America, Europe, Asia-Pacific, and LAMEA.
[石油加工、炼焦和核燃料加工业,化学原料和化学制品制造业] [2020-08-30]
Graphene, the first 2-D carbon material in the world, also known as the "wonder material," is well suited for many applications. Graphene is resistant to fire, an effective conductor, extremely versatile and 200 times stronger than steel and a substance of ultra-lightness. In addition, graphene is regarded in the chemical industry as an effective catalyst because of its properties such as high surface area and adsorption power. Growing demand for chemicals worldwide is expected to increase graphene demand and thus, drive the growth of the global graphene industry. The report on graphene exclusively focuses on current market trends and future growth opportunities of various types of graphene such as mono-layer & bi-layer graphene, few layer graphene, graphene oxide, and graphene nano platelets. Based on application, the market is divided into RFID, composites, sensors, research & development, energy storage, functional ink, and polymer additives. Based on region, it is studied across North America, Europe, Asia-Pacific, and LAMEA.
[信息传输、软件和信息技术服务业] [2020-08-28]
Geospatial imagery analytics utilizes data collected through satellite images and provides visuals and image data of the earth. The geo-referenced images are later presented as raster and vector images. Raster images, also known as bitmaps, are individual pixels of color whereas vector images are graphics comprised of mathematical formulas and can be infinitely scaled. Geospatial imagery analytics are deployed in various industry verticals such as agriculture, manufacturing and mining, and defense & security due to its capabilities of monitoring and identifying any shift in any areas.
[专用设备制造业,电气机械和器材制造业] [2020-08-28]
Heat pump is a mechanical-compression cycle refrigeration system that can be reversed to either heat or cool desired space. Therefore, it is massively used in space heating and cooling applications. It is composed of two main components, which include an indoor air handler and an outdoor unit that is quite similar to the central air-conditioner but referred to as a heat pump. The outdoor unit has a compressor that circulates refrigerant, which is known for absorbing and releasing heat that travels between indoor and outdoor units. The key difference between an air conditioner and heat pump is both technologies cool the desired space using similar mechanisms, but heat pumps can also heat residential spaces, whereas the air conditioner cannot.
[专用设备制造业,电气机械和器材制造业] [2020-08-28]
Heat pump is a mechanical-compression cycle refrigeration system that can be reversed to either heat or cool desired space. Therefore, it is massively used in space heating and cooling applications. It is composed of two main components, which include an indoor air handler and an outdoor unit that is quite similar to the central air-conditioner but referred to as a heat pump. The outdoor unit has a compressor that circulates refrigerant, which is known for absorbing and releasing heat that travels between indoor and outdoor units. The key difference between an air conditioner and heat pump is both technologies cool the desired space using similar mechanisms, but heat pumps can also heat residential spaces, whereas the air conditioner cannot.