GPRS was first applied in railway traffic control in our country,application of train-land information interaction based on GPRS would be very extensive in future.是什么意思_GPRS was first applied in railway traffic control in our country,application of train-land information interaction based on GPRS would be very extensive in future.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句