求翻译：它的基本概念是，出口方承诺从进口方购买等值或一定金额的商品或劳务，不用或少用外汇，贸易双方的进出口货款全部或部分抵消，交易过程在合同或协议规定的期限内完成。是什么意思？

Its basic concept is that the exporters with a commitment to purchase the goods or services of equivalent or a certain amount from the importer, no or little use of foreign exchange, trade of both import and export of payment in whole or in part, offset by the transaction process within the time lim

It is the basic concept, the export commitments from parties of import or purchase a certain dollar amount of the goods or services, not to mention foreign exchange or less, the import and export trade goods between the parties fully or partially to offset, the transaction process in the contract or

Its basic concept is, the exportation side pledge from the import side purchase equivalent either certain amount commodity or the service, does not use or little uses the foreign exchange, the trade both sides import and export to lend completely or the part counterbalance, the transaction process c

It is the basic concept of export values such as commitment to purchase from the importing party or a certain amount of goods or services, without or with less foreign exchange trade of both imports and exports all or part of the loan cancellation, trading process is completed within the time specif

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