âIdealâ means that the feed has symmetrical properties and each port has an axial ratio of 0 dB, so each port responds only to signals with the appropriate sense of polarization and signals with the opposite sense are infinitely attenuated. The feed is mounted at the dishâs focal point.
Leizu(å«ç¥) was a legendary Chinese empress and wife of the Yellow Emperor. According to tradition, she discovered silk and invented the silk loom in the 27th century BC.Leizu discovered silkworms while on a walk investigating damage to the emperor's mulberry trees.However there are different accounts of exactly how she discovered that silkworms made silk. One account says that she used her finger to touch a piece of the silk worm causing a strand of silk come out.eizu discovered silkworms while on a walk investigating damage to the emperor's mulberry trees. However there are different accounts of exactly how she discovered that silkworms made silk. One account says that she used her finger to touch a piece of the silk worm causing a strand of silk come out.
  The silk road was in existence and used as a trading route long before it was discovered by the West. I believe that Marko Polo was the first westerner to travel the roa â¦ d.2 people found this useful. If you're planning to travel by car and want scenic 2  â¦. Chinese Silk: One of the World's Most Luxurious Fabrics Silk has long been seen as one of the best materials for clothing. 3  With its look and feel of luxury, Chinese silk is a highly desirable fabric. 4  While it has been thousands ofâ¦.