Markets clear when quantity demanded equals quantity supplie

it equates the quantity demanded to the quantity supplied? quantity demanded和demand有什么区别? quantity demanded 为何demand加ed? Price (dollars per ticket) Quantity demanded business travel quantity cubic QUANTITY是什么意思 请问operate quantity和restraint quantity是什么意思? order quantity是什么意思挖? incremental order quantity是什么意思 a quantity of chief quantity surveyor是什么意思 单词quantity的用法