482 篇
168 篇
15832 篇
760 篇
267 篇
86 篇
456 篇
37 篇
2183 篇
828 篇
51 篇
176 篇
515 篇
102 篇
62 篇
109 篇
52 篇
322 篇
192 篇
70 篇
[租赁和商务服务业] [2016-12-07]
Car rental services operate through a network of pickup or drop-off points and offer a range of vehicles that customers can pay to drive when required. Car rentals are a substitute to car ownership. In this system, vehicles are owned by a firm or organization that rents them to users for short periods by the day or through monthly or annual plans. Over the past three decades, car rentals have grown from a basic service provided by popular organizations to a widely recognized component of the urban transport industry. They are also quickly developing into a globalized industry that can provide many transportation, land use, environmental, and social benefits.
[农、林、牧、渔业,农副食品加工业] [2016-12-07]
Mushrooms are porous, fleshy, and spongy and are most often considered as vegetables. They have both individual consumers and foodservice providers as primary consumers. Because of their medicinal and nutritional values, consumers in Singapore are willing to pay more for healthy, fresh, and hygienically-packed fresh mushrooms. However, Singapore is a net importer of fresh mushrooms with more than 95% of its fresh mushrooms being imported from other APAC countries.
[文化、体育和娱乐业] [2016-12-07]
The market has number of growth factors, one of the most important being a worldwide rise in the salaries paid to professional baseball players. The average salaries given to players in MLB has grown by more than 20% from 2013 to 2016. MLB has a large number of players, which is also another driver for many players who are trying to become professional players for MLB teams The market is, however, confronted with some major growth inhibitors: the decline of youth participation in the US and baseball becoming an expensive game. The increasing competition in the youth’s game is driving the fun out of the game, leading many youths to stop playing it. Many recreational clubs are also turning to travel baseball teams that participate in many competitive tournaments, and are very expensive to join.
[有色金属冶炼和压延加工业] [2016-12-07]
A steel casting is a method where liquefied steel is poured into a mold, made of sand or ceramic plaster, to create a desired shape. The mold contains a hollow cavity of the required shape. After pouring the liquefied steel cools, solidifies, and is removed for cleaning. The product formed is subjected to heat treatment and further finishing. Heat treatment enhances the properties of the cast formed. Steel castings are preferred for applications requiring high strength, weldability, corrosion resistance, abrasion resistance, and serviceability under low and high temperatures. For instance, steel castings are used for making important components in the mining, construction, military, railroad, truck, and oil and gas industries.
[交通运输、仓储和邮政业] [2016-11-30]
Insulated packaging offers protection from damage to industrial products, foods and beverages, pharmaceutical products, and equipment during shipping and storage. The global insulated packaging market is influenced by demographic trends, such as growing urbanization, population growth, an increase in international trading activities, and industrialization. The various types of insulated packaging products include boxes, containers, bags, pouches, and wraps.
[交通运输、仓储和邮政业] [2016-11-30]
Insulated packaging offers protection from damage to industrial products, foods and beverages, pharmaceutical products, and equipment during shipping and storage. The global insulated packaging market is influenced by demographic trends, such as growing urbanization, population growth, an increase in international trading activities, and industrialization. The various types of insulated packaging products include boxes, containers, bags, pouches, and wraps.
[交通运输、仓储和邮政业] [2016-11-30]
Insulated packaging offers protection from damage to industrial products, foods and beverages, pharmaceutical products, and equipment during shipping and storage. The global insulated packaging market is influenced by demographic trends, such as growing urbanization, population growth, an increase in international trading activities, and industrialization. The various types of insulated packaging products include boxes, containers, bags, pouches, and wraps.
[金融业,信息传输、软件和信息技术服务业] [2016-11-29]
Mobile wallets are electronic money accounts that can be maintained and used via cell phones and other mobile devices. These wallets help account holders pay bills or purchase goods online. Often, companies give offers and discounts to encourage customers to use these apps. Mobile wallets are based on technologies, such as nearfield communication (NFC), and have revolutionized the digital payments market. There has been a rise in the number of point of sale (POS) terminals worldwide since the advent of this technology.
[计算机、通信和其他电子设备制造业,专用设备制造业,仪器仪表制造业] [2016-11-29]
Casting designs have evolved over time, and the need for lower weight metal parts has increased, especially in the automotive industry. Small and accurate cores are required to create specialized structures with thin walls as minimum as 4 mm. However, small cores are delicate and liable to crack, which results in scrap production. Fine scraps are usually undetectable until the last stage, even by using techniques like x-ray analysis. Contamination by scraps renders the thin wall castings futile and significantly increases the expenditure of the automotive industry. Hence, small core setting and handling is best undertaken by industrial robots, which can perform this task with delicacy and accuracy. Robots can transport cores to molding machines without any breakage or scrap formation. They ensure accurate setting of the core into the permanent mold.
[橡胶和塑料制品业,交通运输、仓储和邮政业] [2016-11-29]
Compressors are mechanical devices that compress air or gas in a sealed unit and deliver it at the desired pressure levels. Compressors are categorized as air compressors and gas compressors. An air compressor is a device that compresses and pressurizes air and thereby, converts its potential energy into kinetic energy. A gas compressor is a device that reduces the volume of gas to increase its pressure following the principle of Boyle's law. An air compressor is a distinct type of gas compressor. Compressors are used in several applications across the oil and gas, petrochemicals and chemicals, power generation, desalination, water and wastewater treatment, mining and cement, and fertilizers industries. The major types of compressors considered in this report are centrifugal compressors and positive displacement compressors.