SHENYANG, Feb. 29 (Xinhua) — A team of international scientists has broken through the technological bottleneck caused by the poor fatigue properties of 3D-printed materials, and proposed an innovati
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Freight train falls into river after bridge collapses in U.S. Montana
LOS ANGELES, June 24 (Xinhua) — A freight train fell into the Yellowstone River in the U.S. state of Montana after parts of a bridge collapsed on Saturday, authorities said.
According to the county\’s