Where possible , use energy - efficient light bulbs or tubes . although they cost more , they produce the same light intensity but use less energy and last longer . some types like the compact fluorescent light bulbs can last as much as 10 times longer 尽可能使用悭电灯泡和悭电光管，尽管费用比较昂贵，但耗用电量较少，寿命亦较长，例如紧凑型萤光灯的寿命更比普通灯泡长10倍。
The hybrid material was characterized by ft - ir , fluorescence , xps , tg - dta , and dmta . the morphology of the hybrid material was observed by tem . it was showed that sno2 nanoparticles were in the shape of sphere or tube and some tubes even bifurcated ( 2 )表面活性剂dbs能提高纳米sno _ 2在聚合漆酚中的稳定性，对pus sno _ 2杂化材料的形成起了重要作用，使其颗粒大小在纳米范围内。
