“What? Sugar cane leaves can also generate electricity? Nothing!” said Liu Yuanli, a ......

Heilongjiang Province has an annual output of 70 billion kilograms of grain. According to the sci ......

First, Putian fertilization: Putian should be based on organic fertilizer, 2,500 kilograms of high- ......

Model NO.: SM-N69 ......

Focusing on the goal of pollution reduction, the three measures of “Guan, Zhi, and Control� ......

Applying phosphate fertilizer to crops that are most sensitive to phosphorus reaction, such as ......

10 days before planting, use 2000kg of pig manure per 667m2 to mix 200kg of quicklime, mix it w ......

Foliar fertilizer has the characteristics of quickly supplementing crop nutrients and improving ......

Commonly used nitrogen fertilizer varieties can be divided into four types: ammonium, nitrate, ......

Description: 1. The R1 parameter values ​​in the program are used as a condition, an ......

3, R: calculation parameter R The required values ​​can be calculated or set by the ......

Abstract: Based on Auto CAD, a graphical automatic programming system for CNC wire cutting 3B machi ......