Yi Yang magnetic submersible pump is developed after years of patented product, which achieved a major breakthrough in the field of submersible pumps worldwide, effectively solve the traditional submersible pumps have all the drawbacks: such as low conversion efficiency, easy bearing Loss, high…

Cabbage leaves as a product and is most sensitive to nitrogen requirements. However, when the amount of nitrogen is too high and the phosphorus and potassium are insufficient, the cabbage plants are long, the leaves are large and thin, the ball is not tight, and the water content is large …

Many of the instructions that are often used in machining centers are the same as CNC machines, and are not mentioned here. Only some of the instructions that reflect the characteristics of the machining center are described below:

1. Stop the calibration instruction G09 accurat…

1 Effect of alloying elements

Copper element

The aluminum-copper alloy-rich aluminum partial equilibrium phase diagram is shown in the figure. At 548, the greater solubility of copper in aluminum was 5.65%, and when the temperature dropped to 302, the solubility of copper was …

For a long time, the main edge of the twist drill has been designed as a straight line. In 1990, Fugelso MA found that because the main edge of the taper twist drill was required to be straight, the back angle of the main edge near the core was too small. If the drill was rotated about its …

(3) Temperature distribution in the thickness direction of the product. The temperature at which the article is ejected is an important factor in determining whether the cooling time is reasonable. If the temperature is too high, it is necessary to strengthen the cooling or extend the cooling t…

According to the report of "Daily Science", Swedish and Finnish researchers have established a new type of food testing method that can rapidly and accurately probe pathogens carried by food, which will provide effective help for food safety supervision. The related papers were publ…