用厌氧生物净化法净化此工艺废水,可使净化效率达到93%以上.The purificial to anaerobe. The purification rate could amount to more than 93 % by anaerobic method.通过对原设备的改造, 使净化系统与电炉同步运行率显著提高.Through reforming original equipment, the synchronous ration...
We would be back to our historical cycle of exuberant overextension and sulking isolationism.我们就会回到历史上洋洋自得的过份开发和阴郁沉闷的孤立主义时期,从而周而复始下去.Isolationism is a strictly national policy.隔离主义是一顶严格的国家政策。...the perils of isolationism...
Items: all kinds of top grade and middle rail violins, violas and cellos, prevalent violins and accessories.经营项目: 生产各种型号中、高档小提琴 、 中提琴、大提琴和普及小提琴;及提琴零配件等.He scored one quintet for two violas and the other for two cellos.他为...