库房防尘是档案保护技术的重要课题之一.在祖国的华北、东北、西北的大部分地区,气候常年干燥,风沙较大,防尘问题尤为重要.在这些地区,雨过天晴之后,人们常认为此时室外空气是十分干净的.其实,就是在这样的环境里,每升空气中也有粒径半微米(一根头发丝的二百分之一)和半微米以上的灰尘几万颗;而当漫天黄土的大风季节,空中含尘量就可想而知了.灰尘处处追踪着人们,无孔不入.随着工 Anti-dust warehouse is one of the important issues of file protection technology.In most areas of North China, Northeast China and Northwest China of the motherland, the climate is perennial dry, sand blown larger, dust problem is particularly important.In these areas, after the rain, People often think that the outdoor air is very clean at this time.In fact, it is in such an environment that every liter of air also has a particle size of half a micron (one hundredth of a hair) and tens of thousands of dusts above half a micron When the looming windy season, the amount of dust in the air can imagine the dust everywhere tracking people, all-pervasive