There are two kinds of fertilization methods for the fertilization of vegetable in the protected area: sublime ditch and fertilization. Linyi Fertilizer Network Copyright The submucous sulcus fertilization method is a method of topdressing fertilization used for cultivating vegetables in ridges. ......
Most of the potato topdressing is nitrogen fertilizer, and its amount varies depending on soil fertility, fore crops, irrigation, density, and phosphate application level. When dry farming is carried out without organic fertilizer, the effect of nitrogen fertilizer on topdressing is poor, and it is ......
There must be a door at home, and there must be a lock at the door. The quality of the lock is closely related to the safety of the door. At present, the biggest problem encountered by the world lock industry is that it is difficult to balance safety and convenience. For locks, safety and convenien ......
2. Laser welding process Laser welding requires not only a good laser source, but also a high quality laser beam to ensure the desired "deep penetration deep soldering". A high quality laser beam can achieve a smaller focus diameter or a larger focal length. The line energy is extremely ......
The treatment of welding fume is one of the key points and difficulties in environmental protection in many industries. A series of products developed by Donaldson Company dedicated to soot collection and filtration technology have been successfully implemented in this industry, enabling users to o ......
Model NO.: T5006 Origin: China HS Code: 820320 ......
As long as any CNC machining can be fully expressed by macro programs, even if it is complicated, the program length is very limited. It can be said that any reasonable and optimized macro program will rarely exceed 60 lines and be converted into bytes. 2KB. On the one hand, the macro program is in ......
1. How to replace the original font that can't be found? Copy the font to be replaced to the name of the font to be replaced, such as: open a picture, suggest that the font jd is not found, you want to replace it with hztxt.shx, then you can go to the middle looking CAD font folder (Fonts) Cop ......
Model NO.: weiyue barbed wire Barb Length: 110mm, 104mm, 95mm, 65mm, 67mm. Color: as Your Required ......
Model NO.: 32 Material: Carb ......