%7B%22fid%22%3A%2225%22%2C%22page%22%3A0%2C%22digest%22%3Afalse%2C%22sort%22%3A%22tlm%22%2C%22sizeLimit%22%3A%7B%22others%22%3A%5B%7B%22size%22%3A3000000%2C%22ext%22%3A%22mp4%22%7D%2C%7B%22size%22%3A51200%2C%22ext%22%3A%22gif%22%7D%2C%7B%22ext%22%3A%22bmp%22%2C%22size%22%3A10240%7D%2C%7B%22ext%22%3A%22mov%22%2C%22size%22%3A3000000%7D%2C%7B%22ext%22%3A%223gp%22%2C%22size%22%3A3000000%7D%2C%7B%22ext%22%3A%22avi%22%2C%22size%22%3A3000000%7D%2C%7B%22ext%22%3A%22webm%22%2C%22size%22%3A3000000%7D%2C%7B%22ext%22%3A%22mkv%22%2C%22size%22%3A3000000%7D%2C%7B%22ext%22%3A%22flv%22%2C%22size%22%3A3000000%7D%2C%7B%22ext%22%3A%22wmv%22%2C%22size%22%3A3000000%7D%5D%2C%22default%22%3A500000%7D%7D
矿山、冶金、化工、石油等为其它工业提供基础原材料的工业技术。
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