BEIJING, March 19 (Xinhua) — The rate of infant mortality caused by birth defects in China has dropped by more than 30 percent over the past five years, according to China\’s National Health Commissio
Tag: defect
National bridge, tunnel engineering vocational skills competition held in Guiyang, SW China
Contestants compete in tunnel lining defect non-destructive testing event during a national bridge and tunnel engineering vocational skills competition in Guiyang, southwest China\’s Guizhou Province,