一、不同的氣(qi)體(ti)分(fen)(fen)析(xi)(xi)技(ji)術(shu)比較(jiao)1、氣(qi)體(ti)分(fen)(fen)析(xi)(xi)技(ji)術(shu)介紹(shao)(1)人工(gong)(gong)(gong)采樣法傳統(tong)的分(fen)(fen)析(xi)(xi)方(fang)(fang)法如化學分(fen)(fen)析(xi)(xi)法、氣(qi)相色譜(pu)法較(jiao)多采用(yong)人工(gong)(gong)(gong)采樣法。人工(gong)(gong)(gong)采樣法的特點是采用(yong)人工(gong)(gong)(gong)取樣的方(fang)(fang)式，抽......
風扇(shan)簡介：風扇(shan)的結構：轉子：由磁(ci)鐵(tie)(tie)、扇(shan)葉及(ji)軸組成(cheng)；定(ding)子：有(you)硅鋼(gang)片、線圈及(ji)軸承組成(cheng)；控制電路(lu)：由IC感應磁(ci)鐵(tie)(tie)N．S．極經由電路(lu)控制其(qi)線圈導通而產生內部激磁(ci)使轉子旋......
