Is there radiation in production communication cables?
Refers to the compound fertilizer containing two or more than two kinds of nutrient element fertilizer, compound fertilizer has the advantages of high nutrient content, good physical properties and less side components, for balanced fertilization, increase the utilization rate of fertilizer, promote crop yield plays a very important role. But it also has some disadvantages, such as its nutrient ratio is always fixed, and the kinds, quantities and proportions of nutrients needed by different soils and different crops are varied. Therefore, it is better to measure soil before use, to understand the soil texture and nutritional status in the field, and also to pay attention to the application of unit fertilizer in order to achieve better results.
The cable is twisted and twisted with a plurality of covered wires first on the winding machine, and some of the wires are connected with an anti tension wire, and finally the outer sheath and printing are coated on the surface.All kinds of wires and cables are basically made out of this way. The main machines are stranding, winding, plastic, rubber coating (extruder).
The copper and aluminum rough wires are drawn into a thread of a certain diameter, and then they are made of plastic or rubber (including rubber and vulcanized), and then the single core is made, but the outer skin is covered with wires. Multicore wires should be first plied with copper wires and then coated. For external use, cover the outer sheath again.
