The word 'vitamin' is a generic descriptor for a group of chemical compounds or ingredients that have similar molecular structure and have the ability to perform a required function in the body. The chemical compounds or ingredients that constitute vitamins are called vitamers. There are 13 known types of vitamin with each type having multiple vitamers. For instance, vitamin A has about six vitamers: retinol, retinal, and four types of carotenoids. Vitamin B has eight known vitamers.

关键词：维生素；化学化合物；同效维生素；维生素B

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DMS are integrated systems that combine various components of the grid. They provide operators with valued information in a single screen to help them make informed decisions from a centralized location. This makes the grid more efficient and reliable as it reduces the frequency of power outages.

关键词：DMS；集成系统；各种组件；效率

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Passengers have to undergo strict security screening procedures before boarding an aircraft. Passenger screening commonly includes pat-down searches, metal detectors, and full-body scanners. As air passenger traffic has grown, large airports find it difficult to process passengers through security checkpoints without impacting operational efficiency. As a result, advanced passenger screening systems (based on backscatter X-ray and millimeter wave technologies) are being used at airports worldwide, in addition to existing hand-held and walk-through metal detectors.

关键词：乘客；安检程序；搜身；金属探测器；全身扫描仪；航空客运量；乘客筛选系统

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A house filled with sunlight is warm, inviting, and cheery. Sunlight is an elemental part of human existence and a fundamental component of green design. There is strong relation between light and human health. Buildings with abundant daylight help in keeping the human body physically and emotionally healthy. Scientists at the Lighting Research Center (LRC), in Troy, New York, US, have reported that naturally lit homes increase occupant comfort and productivity, and provide the mental and visual stimulation that is necessary to regulate human circadian rhythms. Natural light also helps in reducing the need to turn on electric lights during the day, thus saving lighting energy consumption by 50-80%. Interior designers and architects plan houses so as to ensure the maximum amount of natural light. However, excessive light can be troublesome and, hence, there should be a proper light balance. Windows cannot be kept wide open all day as this reduces privacy, increases heat gain/loss, and creates glare problems. Window dressing products are helpful to counter such problems.

关键词：自然采光；提高；舒适度；工作效率；调节；人体生理节律

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Totes, just like shoulder bags, have become the most desirable fashion accessory after shoes and are now seen as status symbols. Consequently, demand for luxury and premium handbags is gaining popularity as they create individual identity. Women prefer totes because of their multipurpose utilization. Totes manufacturers are implementing innovative strategies to cater to changing consumer demographies and preferences such as demand for environmentally friendly and stylish handbags.

关键词：手提包；时尚配饰；奢侈品；高档手袋；创新战略；环保需求

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A touch screen display includes a touch sensor, a protection layer, and other components used to detect the touch. Touch screens are usually operated using the fingers or a stylus depending on the convenience and the type of touch screen. Touch screens have wide applications; most of them are used in smartphones and tablets. They are also used in ATMs, kiosks, POP devices, retail signage, transportation, media players, laptops, PCs, and schools.

关键词：触摸屏显示器；触摸传感器；保护层；便利性；触摸屏；智能手机；平板电脑

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Sports footwear is a footwear designed for sports or other forms of physical exercise such as training, walking, running, jogging, aerobic dancing, hiking, tennis and other activities. Currently, there is a wide range of sports shoes available in the market, specific for each sport, with several brands, styles, and features. The global sports footwear market can be broadly segmented into various types.

关键词：运动鞋；体育锻炼；品牌；款式；功能

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A commercial aircraft cabin interior generally consists of lights, seats, windows, windshields, IFEC, galley, and lavatories. The design of the lights and seats, color combinations, and other value add-ons boost the overall look of an aircraft's interior.

关键词：商用飞机；飞机舱；舱内设施

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Dermal facial fillers are smooth injectable gels made from either synthetic or naturally derived materials like HA. They are used as an effective treatment for correcting folds, deep lines, and wrinkles in the face.

关键词：面部皮肤填充；真皮填充；医疗美容

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Every year 10 million people suffer from traumatic brain injuries worldwide, of which three million people are affected in the US alone.

关键词：外伤性脑损伤；CMF；颅颌面外科

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