Trap traps that should be paid attention to when buying pesticides : Pest maps lure you into the way. Some pesticide manufacturers have printed pictures of 6 to 8 species of pests such as borer, leaf-roller, rice planthopper, rice weevil, cabbage caterpillar, and Spodoptera litura on the label or packaging of pesticides, and the pictures are large and clear. Smaller text is printed on the top or side of the picture. Generally, plant protection experts teach you to identify the following pest or pest identification maps, which has led many farmers to think that this pesticide can control 6 to 8 pests on the picture. Diesel engine is an engine that burns diesel fuel to obtain energy release. The working process of a diesel engine is actually the same as that of a gasoline engine, and each working cycle also goes through four strokes: air intake, compression, work and exhaust. Two Cylinder 4 Stroke Diesel Engine,single Cylinder Diesel Engine,V Twin Water Cooled Diesel Engine,air cooled diesel engine Vibropac Machinery Co.,Ltd , https://www.vibropac-power.com
Trap 2: Change the name of the old drug to a new drug. Some pesticide manufacturers have taken a larger profit, and after blending traditional pesticides such as oxazophos and insecticides with a small amount of other pesticide ingredients, they will appear under the new name of high efficiency or efficiency, so that farmers’ friends can see that they are full of fog. Water, stupid. Generally, each pesticide has an active ingredient or a common name. As long as the effective ingredient or common name is seen, it can be known which kinds of pesticides are prepared by the pesticide. There are also manufacturers of the same package with different weight specifications.
Trap 3: Suggested price slaughter you have not discussed. Some pesticide manufacturers will make conspicuously print the suggested retail price or the national uniform retail price on the logo or packaging. In fact, such prices are all wishful thinking of the manufacturers, and some are even the price of the mouth.
The diesel engine sucks pure air in the intake stroke. When the compression stroke is nearing the end, the diesel fuel is increased to more than 10MPa by the fuel injection pump, and is injected into the cylinder through the fuel injector, and mixed with the compressed high-temperature air in a very short time to form a combustible mixture. Due to the high compression ratio of the diesel engine (generally 16-22), the air pressure in the cylinder can reach 3.5-4.5MPa at the end of compression, and the temperature is as high as 750-1000K (while the mixture pressure of the gasoline engine at this time will be 0.6-1.2MPa, and the temperature will reach 600-700K), which greatly exceeds the autoignition temperature of diesel. Therefore, after the diesel fuel is injected into the cylinder, it mixes with the air in a very short time and immediately ignites and burns on its own. The air pressure in the cylinder rises sharply to 6-9MPa, and the temperature also rises to 2000-2500K. Driven by high-pressure gas, the piston moves downward and drives the crankshaft to rotate to do work, and the exhaust gas is also discharged into the atmosphere through the exhaust pipe.