这个是最权威的解读,希望对大家有用:http://www.cepii.fr/DATA_DOWNLOAD/baci/doc/DescriptionBACI.html
t Year
k Product category (HS 6-digit code)
i Exporter (ISO 3-digit country code)
j Importer (ISO 3-digit country code)
v Value of the trade flow (in thousands current USD)
q Quantity (in metric tons)