The four major hazards of computer radiation bai are as follows: 1. Computer radiation pollution can affect the human body's circulatory system, immunity, reproductive function and metabolic functions...
Postmodernism is a trend of art, social culture and philosophy that occurred in Europe and America in the 1960s and became popular in the West in the 1970s and 1980s. Its purpose is to abandon the bas...
Here to tell everyone, I have a good way to regenerate the cover of a book or diary because it is beautifully packaged, looks very environmentally friendly and practical, and keeps it neat and...
Inspection of PU and baiPVC: 1. PU and PVC appearance quality inspection: Under the illuminance of du40W fluorescent lamp, the distance from the tested material is 40~50cm, and the color and pattern m...
The length, width bai and area du of notebook A5 and B5 are different, and the area of B5 is larger than that of zhi A5Enjoy Life A5 Spacer Spiral Notebook. According to the basic area of the paper fo...
As the name suggests, the notebook originally refers to a booklet used to record various things in Bai. There are many kinds of notebooks in this volume. Leather and pp materials can be used for the c...