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31721.全球二氧化碳激光应用市场报告(2015-2019年)
[计算机、通信和其他电子设备制造业,化学原料和化学制品制造业] [2015-01-07]
CO2 lasers use gas as the active laser medium and are preferred over other lasers such as excimer lasers because they are reliable, efficient, robust, and easy to operate.
关键词:二氧化碳;激光标记;激光雕刻
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31722.全球光纤传感器市场报告(2015-2019年)
[计算机、通信和其他电子设备制造业] [2015-01-07]
A fiber optic sensor is a device that employs optical fiber technology to transmit signals to amplifiers for processing.
关键词:光纤传感器;光导纤维;分布式传感
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31723.全球电子烟市场报告(2015-2019年)
[计算机、通信和其他电子设备制造业,烟草制品业] [2015-01-06]
An e-cigarette is an electronic inhaler that simulates tobacco smoking. It is a battery-powered inhaler designed to provide inhaled doses by vaporizing the flavored liquid in it and simulate the effects of smoking by heating a nicotine liquid into vapor, which the user then inhales and exhales. An e-cigarette is also known as an e-vaping device, a personal vaporizer, or an enicotine delivery system. It contains a heating element that vaporizes the liquid nicotine or a flavored liquid.
关键词:电子香烟;电子吸入器;电池供电;加热;尼古丁液;气相
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31724.数据显示:未来5年LED芯片厂或将缩至5家
[计算机、通信和其他电子设备制造业,电气机械和器材制造业] [2015-01-06]
关键词:LED芯片;半导体产业发展
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31725.全球内置扬声器市场报告(2015-2019年)
[计算机、通信和其他电子设备制造业,电气机械和器材制造业] [2015-01-05]
A boombox is a piece of audio equipment capable of playing music at high volumes with superior sound quality. In its simplest form, it comprises loudspeakers, cassettes and/or CD players along with a USB port. Designed for portability, this device could be powered by both line current and batteries. The growth and evolution of boomboxes was driven by a desire for louder and heavier bass music. This led to the development of a few significantly heavy and big boomboxes during the late 90s, which required “D” size batteries sometimes up to 10 or more per box while being operated via battery.
关键词:内置扬声器;音响设备;包括扬声器;磁带;CD播放器;便携性
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31726.全球汽车废气再循环EGR系统市场报告(2015-2019年)
[计算机、通信和其他电子设备制造业,仪器仪表制造业,汽车制造业,信息传输、软件和信息技术服务业,专用设备制造业] [2015-01-04]
An EGR system helps recirculate gases from the exhaust system in an automotive engine. The EGR system valve opens when it encounters pressure from a vehicle's exhaust and sends back the exhaust gas into the combustion chamber. The primary function of an EGR system is to reduce the combustion temperature of the fuel in an automotive engine, and thus reduce production of NOx during engine operation. In gasoline engines, the EGR system also reduces fuel consumption by de-throttling the engine at partial load. At present, the adoption of EGR systems has increased because of stringent government regulations regarding the emission of harmful gases, such as NOx, and PM.
关键词:EGR系统;再循环;排气系统;汽车发动机;减少;燃料的燃烧温度
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31727.全球激光切割机市场报告(2015-2019年)
[计算机、通信和其他电子设备制造业,仪器仪表制造业] [2015-01-02]
Laser cutting machines provide an effective and efficient process for manufacturing components with complex geometry. These machines help manufacturers to cut materials ranging from steel to plastics with precision, which helps them to develop products with a high level of versatility. Laser cutting machines are equipped with high-power lasers that can vaporize materials, thereby eliminating the need for tool-based machining. Because of such advantages, the adoption of laser cutting machines has increased among companies across industries such as Automotive, Aerospace and Defense, Electrical and Electronics, Industrial Machinery, Healthcare, Plastics, Textiles, and Wood Working. In addition, laser cutting machines minimize production delays which can occur with other machinery available in the market.
关键词:激光切割机;有效;高效;工艺流程;削减材料
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31728.基于强度排序的通信社区检测算法
[计算机、通信和其他电子设备制造业] [2014-12-29]
针对当前电信网中如何有效刻画含权网络的真实特征,完善和发展相关复杂网络模型的难题,特别是对通信社区检测结果层次结构不清晰及运算复杂度高的问题,从复杂网络特征分析入手,设计了一种新的通信社区检测算法。该算法基于通信强度排序方法实现通信社区的有效检出,基于通信密度分布生成高分辨率层次嵌套树,通过距离矢量修剪嵌套树,实现社区稳定检测和层次结构分析同时降低计算复杂度。该算法使用真实网络数据进行了有效验证。
关键词:复杂网络;电信网;通信强度;层次结构;通信社区
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31729.时延受限的移动sink数据收集算法
[计算机、通信和其他电子设备制造业] [2014-12-29]
在实时性要求比较高的应用中,时延要求限制了sink的移动速率与移动轨迹,sink的移动速率限制了节点与sink的通信时间,因此很难兼顾时延要求与数据收集效率。提出一种时延受限的移动sink数据收集算法MSDC,在低能耗缓存区内找到一条sink的最优移动轨迹,在有限的时间限制内利用sink的移动性来提升传感器网络的数据收集性能。仿真结果表明,与已有算法比较,该方案能够提高网络数据采集量,降低能耗,延长网络生命周期。
关键词:时延受限;移动sink;移动轨迹;数据采集量
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31730.云存储系统中数据副本服务的可靠性保障研究
[计算机、通信和其他电子设备制造业] [2014-12-29]
以数据节点与网络链路的可靠性因素分析为基础,提出了云存储系统的数据副本服务可靠性模型。根据访问可靠性与数据副本数量、用户访问量之间的关系,设计数据服务可靠性、副本生成时机、存储节点选择的确定方法,实现了副本分布、删除算法,并在云存储系统ERS-Cloud上进行一系列实验,结果表明该方法能够有效保障数据服务的可靠性,进一步降低副本的冗余存储数量。
关键词:云存储;数据副本;可靠性模型;保障