What is the mode of EVC digital currency
bus line: Metro Line 3 → Metro Line 2, the whole journey is about 21.4km
1. Walk about 270m from Tianjin south station to Tianjin South Station
2. Take Metro Line 3, pass 15 stations to Tianjin station
3. Take Metro Line 2, pass 2 stations to dongnanjiao station
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1. EVA: refers to "ethylene vinyl acetate copolymer" and its rubber and plastic foaming materials
EVC refers to the copolymer of ethylene and vinyl chlorideEVA as shown in the figure:
2, different properties
EVA: it is a solid at room temperature, and it becomes a liquid that can flow and has a certain viscosity when heated and melted to a certain extent
EVC: it has the properties of rigid PVC resin EVA has good cushioning, anti-seismic, heat insulation, moisture-proof, chemical corrosion resistance, anti bacteria and waterproof EVC has good transparency, impact, thermal stability, weather resistance and flame retardancy4, different water absorption
EVA: Rubber and plastic procts are new environmental protection plastic foam materials, not water absorption
EVC is a water-soluble initiator5, different uses
EVA: used for making refrigerator tubes, gas pipes, civil engineering plates, containers and daily necessities
EVC: used for extrusion, injection molding and blow molding of food packaging films and procts
Copolymer of ethylene and vinyl chloride
ethylene vinyl chloride copolymer (EVC). In 1963, it was first proced by UCC company
was prepared by free radical copolymerization at 90 ℃ and 98.1mpa. Suspension polymerization or emulsion polymerization can also be used. The initiator is organic peroxide or water-soluble initiator
Vinyl chloride, also known as vinyl chloride, is an important monomer used in polymer chemical instry, which can be made from ethylene or acetylene. It is colorless and liquefiable gas with boiling point of - 13 ℃, critical temperature of 151.5 ℃ and critical pressure of 5.57mpa. The relative density was 2.2%vinyl chloride is a toxic substance, long-term inhalation and contact with vinyl chloride may cause liver cancer. It forms explosive mixture with air, the explosion limit is 3.6% ～ 33% (volume), and it is easier to explode under pressure. During storage and transportation, attention must be paid to the sealing and nitrogen sealing of containers, and a small amount of polymerization inhibitor should be added
is mainly used to manufacture homopolymer and copolymer of PVC. It can also be copolymerized with vinyl acetate and butadiene. It can also be used as an extractant for dyes and perfumes. It can be used as comonomer of many kinds of polymers, important raw material of plastics instry, and also as refrigerant, etc
operation management
closed operation, full ventilation. Operators must be specially trained and strictly abide by the operating proceres. It is suggested that operators should wear filter type gas mask (half mask), chemical safety glasses, anti-static work clothes and chemical gloves. Keep away from fire and heat source. No smoking in the workplace. Use explosion-proof ventilation system and equipment
prevent gas leakage into the workplace air. Avoid contact with oxidants. During transportation, cylinders and containers must be grounded and bridged to prevent static electricity. Load and unload with care ring transportation to prevent damage of steel cylinder and accessories. Fire fighting equipment of corresponding variety and quantity and leakage emergency treatment equipment shall be provided
EVC, Ethernet virtual connection, is very similar to PVC / SVC in ATM technology. EVC is an end-to-end concept. We can think of it as a logical pipeline. Once an Ethernet frame enters the pipeline, it will not leak unless it comes out from another opening of the pipeline. EVC can be more formally described as "an instance of two or more Unis associated"
EVC plays a very important role in Carrier Ethernet services. By building a statistical multiplexing logical pipeline in the limited network resources, the traffic can be effectively isolated. By controlling the logical pipeline and its traffic, carrier Ethernet has a relatively complete traffic control capability, This is an important feature of telecom service<
2Development tool
EVC = Embedded Visual C + +, is one of the software development tools under Windows CE
EVC = Embedded Visual C + +, is one of the software development tools under Windows CE
if the guest OS is windows, vmware tools will be installed automatically. If it is Linux, after installation, the installation file of vmware tools will be mounted to the CD-ROM drive (in virtual mode, there is no CD-ROM in the CD-ROM drive). Enter the mount point of the CD-ROM drive and install the file.
In the end of the battle in 2020, the US stock market continued to set a record high, and the three major indexes of A-share also set a stage high, and A-share closed a beautiful battle. Next Monday, a shares will usher in a new year's market. How will a shares operate? How will 2021 be ushered in
according to the stage position of the current A-share market, it is predicted that the A-share market will open high and go low next Monday, or rush high and fall back after a small high opening, and finally close with the K-line of Xiaoyin and Xiaoyang, which will not continue the sharp rise before the festival (4) we can predict the trend after the festival according to the historical bull market of a shares. The real market of the stock market is started in pessimism, not accelerated in optimism although the current market is at the end of the bull market, it will soon enter the middle of the bull market. When the bottom of the bull market is completed, there will be a wave of adjustment in the market, and only after the adjustment will it really enter the bull market therefore, according to this rule, this kind of false high before the festival is to attract more, just to attract more at the high level, in order to dig holes in the market next time, it is predicted that the trend of next Monday will not continue to rise to a new high summary based on the above comprehensive analysis of the closing battle in 2020, it can be fully proved that it is difficult for the market to continue to rise to a new high according to the characteristics of new high index, indivial stock, market trend and current stock market environment it is predicted that after the first trading day after new year's day, either the opening will hit a new high, or the opening will fall back after a new high. No matter which way, the operation trend of next Monday should not be blindly optimistic, but be cautious
in fact, a shares are in a bull market now, and this bull market has been going for more than a year. It can be proved that it is a bull market from the following three aspects:
first, the three major indexes have completely formed an upward trend, especially the growth enterprise market and Shenzhen stock index have completely gone bull, and the Shanghai stock index is not obvious
Second, there are many bull stocks and demon stocks in the stock market, and the appearance of bull stocks and demon stocks in indivial stocks is the best proof that the current A-share market has gone bull. If the stock market is a bear market, it is impossible to have so many bull stocks, let alone so many demon stocks
Third, according to the current trend of indivial stocks, although only some stocks are rising, there are still many stocks lying at the bottom. But even if the prone stocks did not rise sharply, they did not continue to set new lows, because now the stock market is bullish, the market environment is good, and the indivial stocks are encouraged to resist the decline, which will not keep new lows as in the bear market
therefore, according to the three characteristics of the current A-share, it can be fully proved that the current A-share has been in a bull market. Since the end of the bear market announced by the Shanghai Composite Index after 2440 in January 2019, our A-share has entered a bull market
the bull market is likely to have begun. For example, the Shenzhen 100 in the figure below shows that the trend has already started and is still going very fast
I don't know if it will bring us a big surprise like gem 50 in the first half of 2020. But the trend is to try out, as long as we adhere to the principle of "selecting the strong and eliminating the weak", we will not be in vain
I may not care too much about the plate, because as I said before, which plate with higher quality is not expensive? Which instry leader is not expensive
so I may pay more attention to indivial stocks
relying on indivial stocks to complete my 21-year income plan, rather than relying on the plate and market
I am afraid that the market is difficult to complete, and the plate is difficult to have another wave
I can only rely on in-depth research on indivial stocks to find a new way
so far, My 21-year investment plan is a four word "make a chestnut out of the fire". These four words can explain the current market situation and the plan of my stock
it is not easy to achieve the income target when the overall valuation is so high
so I will pay more attention to research enterprises next year, It won't be a year for me to make money.
I'm ready for the challenge of the year of the ox
What about you? Are you ready
I wish you all good luck in the year of the ox! Wish you a great fortune in the year of the ox
I hope to give you some inspiration and help you
finally, I wish you health, happiness, freedom and money
Copolymer of ethylene and vinyl chloride
ethylene vinyl chloride copolymer (EVC). In 1963, it was first proced by UCC company
was prepared by free radical copolymerization at 90 ℃ and 98.1mpa. Suspension polymerization or emulsion polymerization can also be used. The initiator is organic peroxide or water-soluble initiator
operation management
closed operation, full ventilation. Operators must be specially trained and strictly abide by the operating proceres. It is suggested that operators should wear filter type gas mask (half mask), chemical safety glasses, anti-static work clothes and chemical gloves. Keep away from fire and heat source. No smoking in the workplace. Use explosion-proof ventilation system and equipment