W W W (World Wide We b), which is a large-scale, online information repository, and users can find it through an interactive application called b r o w s e r. Many browsers have a click interface-the browser displays information on the user's computer screen and allows the user to manipulate it through the mouse. The displayed information includes text and graphics. Moreover, some information is highlighted to indicate that the item is optional. When the user places the cursor on the selectable item and clicks the mouse button, the browser displays new information associated with the selected item. It can be summarized as follows:
Browser is an interactive program, which allows users to view information from W W W. This information contains some options that allow users to view other information related to it. Internet: Internet, that is, an international computer network composed of a wide area network, a local area network and a single computer according to a certain communication protocol. Internet refers to the result that two computers or more than two computer terminals, clients and servers are connected with each other by means of computer information technology. People can send emails to each other with friends thousands of miles away, complete a job together and have fun together. E-commerce: E-commerce usually refers to a new business operation mode in which buyers and sellers conduct various business activities without meeting each other in a wide range of business activities around the world under the open network environment of the Internet, and realize online shopping of consumers, online transactions between merchants and online electronic payment, as well as various business activities, trading activities, financial activities and related comprehensive service activities. EDI: What is EDI? EDI is the abbreviation of English Electronic Data Interchange, which can be translated as "Electronic Data Interchange" in Chinese. It is an electronic means to transmit operation documents such as orders and invoices between companies. B2G：B2G is a newly emerging e-commerce model, that is, "business to government" (a variant of the term B2B or business-to-government). Its concept is that businesses and government agencies can use the central website to exchange data and do business with each other, which is more effective than they usually leave the network. For example, a website that provides B2G services can provide a single local business, locating applications and tax formats for one or more levels of government (city, state or province, country, etc.); Provide the ability to send out completed forms and pay; Update the information of the enterprise; Ask for answers to specific questions and so on. B2G may also include e-procurement services, through which merchants can know the purchasing needs of the agency and the agency requests the proposed response. B2G may also support virtual workshops, where merchants and agents can share a public website to coordinate the work of contracted projects, coordinate online meetings, review plans and manage development. B2G may also include the leasing of online application software and database design, especially for the use of government agencies. Electronic trading market: 1. Online trading and online settlement can be realized through the trading system, and the performance of the contract can be guaranteed through the margin system.
second, the trading mode design is diversified, covering all kinds of trading modes of spot trading of steel products, which can realize cross-mode arbitrage.
third, the system design is personalized, and traders can choose the trading and settlement methods or make their own agreements during the trading process.
fourth, the seller's listing and the buyer's listing have realized the online transaction of traditional spot trade.
5. Online bidding and online auction adopt bidding transaction to help enterprises maximize sales profits and minimize procurement costs.
VI. Online negotiation realizes the online interaction of traders in the trading process.
VII. Two-way bidding selects representative varieties with large market circulation, and forms guiding prices through the trading mechanism of open bidding. It is convenient to buy and sell steel products and transfer contracts, which is beneficial for enterprises to control costs, lock in profits in advance and avoid the risks brought by price fluctuations.
VIII. Bidding special session selects trading varieties according to regional trading hotspots, providing reference prices for enterprises to purchase and sell steel products in the near future, facilitating enterprises to buy and sell hot steel products and transfer contracts, promoting resource circulation and optimizing resource allocation.
IX. call auction is a standardized spot trading model for traders. Buyers and sellers bid centrally and implement rolling settlement, which is convenient for large-scale transactions and forms a recent spot price with market guiding significance.
X. Online bidding provides a convenient and low-cost online bidding mode for traders, shortens the bidding period, increases the frequency of bidding, and attracts a wider range of bidders to participate.
Xi. Online special sessions can be set up in different regions and varieties to meet the individual needs of traders.
symmetric encryption algorithm: symmetric encryption algorithm is an earlier encryption algorithm with mature technology. In the symmetric encryption algorithm, the data sender processes the plaintext (original data) and the encryption key together with a special encryption algorithm, and turns them into complex encrypted ciphertext and sends them out. After receiving the ciphertext, if the receiver wants to interpret the original text, it needs to decrypt the ciphertext with the encrypted key and the inverse algorithm of the same algorithm, so as to restore it to readable plaintext. In symmetric encryption algorithm, there is only one key used, and both sender and receiver use this key to encrypt and decrypt data, which requires the decryptor to know the encryption key in advance. Digital abstract: Generally speaking, digital signature is used to deal with short messages, but it is a bit difficult compared with longer messages. Of course, a long message can be divided into several small pieces, and then signed separately. However, doing so is very troublesome and will bring problems of data integrity. It is more reasonable to summarize the message digitally before digital signature.
digital digest is to change a message of arbitrary length into a short message of fixed length, which is similar to a function in which an independent variable is the message, that is, a Hash function. CA: Chemical Abstracts (CA) was founded in 197 and edited and published by Chemical Abstracts Service (CAS) under the American Chemical Society. It is now the most comprehensive and widely used document retrieval tool in the world. Other explanations of CA: CA: Chartered Accountant Chartered Accountant
CA China:/
CA: call sign of civil aviation
two-character code used by China Aviation Group Corporation (including its subordinate units)
CA: automobile manufacturing plant
Pinyin abbreviation of No.1 automobile manufacturing plant
CA: software manufacturer
IT is the third largest software manufacturer in the world
CA: chairman of International United Computer Corporation:
it man of iron. Cruiser abbreviation
Ca(Capillary Number):
Capillary number is a dimensionless number in fluid mechanics, which reflects who plays the leading role in the influence of surface tension and viscous force on fluid motion. Equivalence is the ratio of viscous force to surface tension, which is of great significance in the study of laminar motion state of microfluidic chips.
ca (wiping): wiping sweat, which is the same as "sweating".
or a variant of swearing.
CA: Computer Algebra
CA: California
C.A
C.A.: A barrel of industrial chemicals (for example, ISOPROPANOL alcohol with industrial purity of 99.% 2LT/CA)
CA: Cellular Automata, Abbreviation of CA)
CA:CASTOR Keai Company
CA: Cabin Attendant is another name for flight attendants that people are familiar with
CA:Conan+Ai's CP: Keai's abbreviation
CA:correct action, which points out the correction after mistakes, improves actions or plans, and prevents similar situations.
abbreviation code of common plastics and resins
CA: cellulose acetate
CAB: cellulose acetate-propionate
CF: cresol-cresol
CA: hippoCAmpus
bubble hall English abbreviation
full name: Crazy Arcade, directly translated as crazy street
CA on the network refers to cā rub. It was founded in August 26 by the famous post-8s writer Jing M.Guo.
Fantasy Westward Journey
The abbreviation of map Chang 'an (CA) in the online game Fantasy Westward Journey is E-business: definition of common standard: using Web technology to help enterprises streamline processes, improve productivity and efficiency. Make it easy for the company to communicate with partners, suppliers and customers, connect back-end data systems, and handle business matters in a safe way. E-business, called e-business, is a digital transaction and process that takes place within the enterprise, including the information system within the enterprise. Characteristics generally do not include commercial transactions with value exchange across organizational boundaries. When commercial transactions occur, business will be transformed into business. E-commerce mainly involves cross-enterprise boundary transactions.