The causes behind breakage of the catalyst are excessive sodium and vanadium content in the feed oil, excessively high regeneration temperature and excessively high steam velocity in riser pipe.
During the tunnel digging, crevice water seeped into the tunnel and resulted in the dry-up of the springs, thus affecting the ecological environment of the mountain region.
There's part of this sickening horror of knowing you're walking on the edge with this, that I kind of like, knowing that it could all fall apart at any second.
When Ming Li arrived at the Zhengzhou hospital after having been run over by a tractor last June, her left hand was completely severed from her body and her arm was mangled.