把电影胶片或幻灯片转换成视频应该不费吹灰之力。Transferring cine film or slides to video should be a doddle.他在讲演中使用了探险时拍摄到的幻灯片。His lecture was illustrated with slides taken during the expedition.光指示器经常与幻灯片放映机一起使用.A light pointer is often useful...
Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol.对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂....