英国《轮胎与配件》2 0 0 2年 1期 2 6页报道 :近 1 0年来 ,英国拖拉机的规格和功率不断增大 ,轮胎也不得不适应这一变化 ,拖拉机轮胎的平均质量从 5年前的 70ｋｇ增大到目前的 1 0 0ｋｇ以上。2 0 0 0年英国注册拖拉机为 1 0 4 2 2辆 ,同比下降 5 % ,减少 5 0 0多辆 ,但是平均 Tires and Accessories, UK 2 0 0 2 1 2 2 6 Page 4 Reportedly: In the last 10 years, the specifications and power of tractors in the UK have been increasing. Tires have also had to adapt to this change. The average quality of tractor tires ranges from 5 years 70kg before the increase to the current more than 100kg. In 2000, the number of registered tractors in the United Kingdom was 1 0 4 2 2, a decrease of 5% over the same period of last year and a decrease of over 500 vehicles. However, on average