The 2-Minute Rule for micropile
Important advancements arrived with the development of the vacuum tube by Lee de Forest of the United States inside the early 20th century plus the creation on the transistor in the mid-20th century. Inside the late twentieth century electrical and electronics engineers outnumbered all others on the earth.เรื่à¸à¸‡à¹€à¸ªà¸²à¹€à¸‚็มไà