Pictured here is a fragment of porcelain, which is known to be part of a large circular porcelain plate.
AB is 20cm long and CD is 2cm long. Ask for the radius of this porcelain plate.
Pictured here is a fragment of porcelain, which is known to be part of a large circular porcelain plate.
AB is 20cm long and CD is 2cm long. Ask for the radius of this porcelain plate.
Hebei News Network News (correspondent Miao Wenjin) Late one night a day ago, the Handan Traffic Patrol Police Detachment Daiming Brigade received a police report that an old man riding a bicycle on the Congfeng Highway was suddenly in a car accident and died on the spot...
10-28
Original title: The team of the University of Earth found fragments of oceanic plates that disappeared 2.7 billion years ago in North China (citation) Pushing the large-scale empirical evidence of plate tectonic theory forward 200 million years (theme) Hubei Daily News (reporter...
11-09