Power electronics is the usage of solid state electronics for the control and conversion of electrical energy. Most of the electronic systems are concerned with the transmission and processing of data and signals. These power electronic devices have high power efficiency and high blocking voltage as well as the ability to work on low power. The typical power electronic devices that can be found in many instruments are AC/DC converters, which are used in application such as televisions, computers, and battery chargers.

关键词：电力电子技术；固态电子控制；转换；电子系统；处理；数据和信号

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A PLC is an industrial control product that regulates various automation and mechanical processes in manufacturing plants. It controls various automation applications in a plant by maintaining direct connectivity with field devices such as sensors, transmitters, and actuators. A PLC receives commands and signals from field devices and other industrial systems through a control system communication protocol. It uses various programming languages such as ladder diagrams, functional block diagrams, and instruction lists to regulate processes.

关键词：PLC；调节；自动化；机械工业控制；控制系统；通信协议

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Pediatric vaccines are used for the immunization of children to give protection against various infectious diseases such as diphtheria, influenza, hepatitis, pneumococcal diseases, and meningococcal diseases. According to the classification adopted by the US FDA, children are classified as newborn, infant, child, and adolescent, ranging from birth to 21 years of age. However, the EMA classifies pediatrics as ranging from birth to 18 years of age.

关键词：小儿疫苗；儿童；免疫接种；给予保护；防止；传染病

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Oil and gas accumulators are hydro-pneumatic devices that store incompressible fluid under high pressure via an external source, which can be a spring, liquid, gas, or piston. These accumulators are very important because they are used for various purposes such as noise reduction, pulsation damping, and leakage compensation. Oil and gas accumulators can be made of different materials. Their size can also vary depending on their application for different pressure ranges. The commonly used accumulators in the Oil and Gas industry are given in the exhibit below.

关键词：石油；天然气蓄能器；不可压；缩流体液；压气动设备

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Olive oil is an important part of the Mediterranean diet. It is also used by the Cosmetics and Pharmaceuticals industries, in religious rituals, soaps, and as a fuel for traditional oil lamps. Olive oil is believed to increase hair growth and is used in many hair oils.

关键词：橄榄油；地中海饮食；化妆品；制药行业

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The prices of fuel are rapidly rising worldwide, and the consequences of global warming are increasingly becoming inevitable. In such a scenario, there is an urgent need for technologies that would reduce greenhouse gas emissions and fuel expenditure. Hybrid technology vehicles, such as off-highway hybrid commercial vehicles, offer the most viable solution to this problem. Off-highway hybrid commercial vehicles find their applications mainly in three sectors: Agriculture, Construction, and Mining. Agricultural activities across the world are expected to increase in the future. In addition, infrastructure projects worldwide are expected to increase, especially in emerging economies. Both these scenarios would lead to an increase in the demand for off-highway commercial vehicles, and hybrid technology used in such vehicles would prove to be beneficial to consumers.

关键词：燃料价格；减少；温室气体；燃油开支；混合动力技术；汽车

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Small cells are defined as low-powered radio access nodes that operate in licensed bands. They are mostly used in indoor and densely populated areas to provide better wireless network coverage. The coverage area of small cells varies from more than 32 feet to a few miles, which is comparatively less than that of mobile macrocells. The types of small cell that are commonly used by telecom operators globally are femtocells, picocells, microcells, and metrocells.

关键词：小型电池；操作；许可频带低功率；无线电接入节点；无线网络

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A PC peripheral is a component/device that can be connected to a PC either externally or internally to enhance its performance/capabilities. A component that is already a part of the PC is not considered as a peripheral. It refers to the physical parts added to the PC to enable an enhanced performance. For instance, devices such as mice, keyboards, printers, scanners, modems, and routers are known as PC peripherals.

关键词：PC；外围设备；组件/设备；提高；其性能/功能

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PGD testing involves the identification of genetic defects in embryos. It is primarily performed to identify single-gene disorders such as sickle-cell anemia, cystic fibrosis, Huntington’s disease, hemophilia, Marfan’s disease, thalassemia, muscular distrophy, Tay-Sachs disease, and spinal muscular atrophy. PGD testing is generally carried out on people when they have a known genetic defect or in late-age pregnancy or if a woman has a history of repeated miscarriage. The transfer of an embryo into the uterus is done after PGD testing so that couples can make a decision about the consecutive steps they would like to take with regard to the IVF process. The technologies primarily used for PGD testing are PCR, FISH, CGH, and SNP. PCR is the most widely used technology in PGD. FISH testing is a technology that is beneficial in the determination of chromosomal abnormalities, X-linked diseases, and aneuploidy screening. CGH and SNP testing are advanced technologies in PGD that have a high accuracy in screening and diagnosis.

关键词：PGD测试；遗传缺陷；胚胎鉴定；识别；单基因疾病

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Music publishing involves promoting music from various sources including independent musicians as well as music publishing houses. Music publishing owns and copyrights compositions from different sources and earns revenue from their sales globally through recordings, public performances, films, and advertisements. The Global Music Publishing market was going through a rough phase because of the decline in sales of physical albums, but the growth in the market is expected to revive in the future as digital sales pick up and compensate for the decline in physical copy sales.

关键词：音乐出版；各种来源；音乐出版公司

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