钢琴制造年代的鉴别钢琴是西洋乐器。最早的钢琴约于14世纪初面世,被叫做“拨弦钢琴”。1709年意大利人B·克里斯托福里发明了有轻重音变化的钢琴,(Pianoforte)才逐步有了现代钢琴。18世纪中叶19世纪初,随着西方传教士和商人来到中国,钢 Piano identification of the age of manufacture is a Western musical instrument. The earliest pianos dating back to the beginning of the 14th century were called “pianos”. In 1709 Italian B. Christopher invented the piano with light and heavy changes, (Pianoforte) gradually have a modern piano. Mid-18th century early 19th century, with Western missionaries and businessmen came to China, steel