First, PP (polymer polypropylene) generally refers to polypropylene.
Polypropylene is a polymer formed by addition polymerization of propylene. It is a white waxy substance with a transparent and light appearance. The chemical formula is (C3H6)n, the density is 0.89 ~ 0.9 1g/cm3, it is flammable, the melting point is 189℃, it softens at about 155℃, and the service temperature range is -30 ~ 140℃.
It can resist the corrosion of acid, alkali, salt solution and various organic solvents below 80℃, and can be decomposed under high temperature and oxidation. Polypropylene is widely used in the production of clothing, blankets and other fiber products, medical equipment, automobiles, bicycles, parts, transportation pipelines, chemical containers and so on. It is also used for the packaging of food and medicine.
Secondly, pp is the abbreviation of protection profile, which refers to a set of security requirements that meet the needs of specific users, a TOE (evaluation object), which has nothing to do with implementation.
Third, positive assumptions, that is, positive assumptions, consider in a positive direction when facing problems and interpersonal relationships. For example, if someone is late for an appointment, I think maybe I arrived early, maybe he deliberately left me some time to prepare, or maybe something happened to him that I couldn't get away from. On the bright side, work and life are much easier and unnecessary troubles are reduced.
Fourthly, PP (Japanese: PP, English: PP), the full name of move point (temporarily translated, Japanese: パワーポント, English: power point), explains the number of times a move can be used.
5.PP is the abbreviation of percentage point or percentage point in English, which means percentage point. Compared with%, it means "absolute value of change"
That is, percentage point or percentage point, abbreviated as PP, which means percentage point. For example, in the government work report, the employment rate of college students reached 74% this year, and it is planned to increase by 5pp next year, that is, the employment rate of college students is planned to increase by 5 percentage points (reaching 79%) next year.
Pay attention to the difference between it and percent, such as 40%->; 44%, an increase of 4 percentage points (4 pp), but the corresponding increase is 10% (10%, 10%).
Six, PP (production planning) module, the Chinese name is production planning module.
PP module belongs to one of the logistics modules in SAP, and together with MM module and SD module, it constitutes the most basic production, supply and marketing system of production enterprises.
The PP module helps all employees from the production manager to the operator to plan the production process. For example, it can plan the transportation and storage of raw materials, production equipment, by-products and waste products. The production process is represented in graphic form, which shows the relationship between production stages and provides the information needed for planning, control and production documents.
The production planning module generates production orders, which summarize cost, material, technology, quantity and progress information. PP module can meet the operational needs of manufacturers whose business processes are constantly changing and developing. It can provide an ideal solution for production planning, production execution and production control. In PP module, demand management, material demand planning, production control and settlement are widely used functions of enterprises.
Seven,? Pp (abbreviation of vitamin PP) generally refers to nicotinic acid.
Nicotinic acid belongs to vitamin B family, also known as nicotinic acid, vitamin B3 and anti-furuncle factor. Its molecular formula is C6H5NO2, and its chemical name is pyridine -3- formic acid. It has good thermal stability and can be sublimated. Sublimation is often used to purify nicotinic acid in industry. Nicotinic acid is white crystal or white crystalline powder, which is easily soluble in water. It mainly exists in animal viscera and muscle tissues, and also exists in trace amounts in fruits and egg yolks. It is one of the essential 13 vitamins for human body.
At present, nicotinic acid is mainly used as feed additive, which can improve the utilization rate of feed protein, improve the milk yield of dairy cows and the yield and quality of fish, chicken, duck, cattle and sheep. Nicotinic acid is also a widely used pharmaceutical intermediate, from which many drugs can be synthesized, such as nikethamide and inositol nicotinate. In addition, nicotinic acid also plays an irreplaceable role in luminescent materials, dyes, electroplating industry and other fields.
Eight, payback period, referred to as PP, means payback period.
Investment payback period refers to the time required to recover the investment through the net cash flow of the project, which is generally calculated in years.
The calculation of investment payback period varies with whether the annual net cash flow is equal or not.
If the annual operating net cash flow is equal, its calculation formula is.
PP= initial investment/annual net cash flow.
If the annual net cash flow is not equal, the calculation formula of investment payback period should be determined according to the amount of investment that has not been recovered at the end of each year. Its calculation formula is:
PP= year when cumulative net cash flow is positive-1+ absolute value of cumulative net cash flow in previous year/net cash flow in current year.
Nine, PP (Thai actor, singer) generally refers to Crete Anuad Chikang.
PP.krit (Lin),1Born in Bangkok, Thailand on April 30th, 1999, studied at kasetsart University. He is a Thai actor, singer and model. The main works are "Interpreting my love with your heart"? [1-3], the alarm of love.
Refer to Baidu Encyclopedia -pp for the above contents.