Payment methods are decided centrally是什么意思?

Payment methods are decided centrally是什么意思? Payment methods是什么意思 payment terms 和payment methods到底有什么区别! research methods是什么意思 storage methods是什么意思 collect,payment各是什么意思 amount of payment是什么意思 Confirmation of Payment是什么意思 by deferred payment是什么意思 payment balance是什么意思 "payment upon shipment"是什么意思? do the payment是什么意思?