Telex service is more convenient and economy than telegram service, therefore now most messages of foreign trade corporations are sent out by telex.
电传比电报更方便、更省钱，因此目前外贸公司大部分的电文都用电传发送。
Through typical investigation, the developing tendency of telegram service is forecasted on the basis of full and accurate data.
通过典型调查，在占有翔实资料的基础上，预测公众电报业务的发展趋势。
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