stretch mark oil The car engine is in the design phase, and the fuel used for the compression ratio is set. The compression ratio is a very important structural parameter of the engine, which indicates the volume of the gas at the beginning of the piston at the beginning of compression and the volume ratio of the gas volume at the end of the piston. In terms of power and economy, compression ratio should be bigger and better. The compression ratio is high, the power is good, the heat efficiency is high, the vehicle acceleration, the top speed of the car will be improved accordingly. However, the compression ratio of the gasoline engine is not too large due to the performance of the cylinder material and the vibration of gasoline combustion. In short, a high compression ratio USES a high grade fuel oil. The higher the fuel mark, the slower the oil will burn, and the lower the combustion detonation, the higher the compression ratio of the engine. On the contrary, the low-grade fuel combustion rate is faster, the combustion explosion is large, the engine compression is lower. Brexit offers a chance to "reshape the structure of the UK economy", but the impact of regulatory barriers could hurt carmakers and the financial sector. Although miolo is doing well in China, tiloni also talks about his worries. He believed that the greatest advantage of the Brazilian wine is cost-effective, but compared with wine importing "zero tariff" neighboring Chile, Brazil wines in the Chinese market at present stage, there is no big advantage to speak of. "Our biggest problem right now is the price," he said. "our wine is very competitive when it comes out of the factory." But Chile and China have zero tariff agreements on wine trade, and we don't, which makes our products much more expensive in China. However, I believe that this problem will be solved and the demand for wine in the Chinese market is very high. I believe that the future development of Brazilian wine in China should be good. This sharp reversal contrasts with the flattening of the previous yield curve. Investment refers to the specific economic subject in order to reap the benefits in the foreseeable future period or capital appreciation, within a certain period of a certain subject matter in the field of putting enough amount of money or currency equivalent physical economic behavior. It can be divided into physical investment, capital investment and securities investment. The former is to put money into the enterprise, make a certain profit through production and operation. The latter is to purchase the shares and corporate bonds issued by the enterprise and indirectly participate in the profit distribution of the enterprises. Securities investment analysis method mainly has the following three: analysis of fundamental analysis, technical analysis, evolution, in which the fundamental analysis is mainly used in the choice of investment subject matter, technical analysis and evolution analysis is mainly used in the specific investment operation on the judgment of time and space, as a useful supplement to improve effectiveness and reliability of investment analysis.