elastic of demand meaning in English

需求弹性

However primary industry , heavy industry and chemical industry , which have been highly protected from the nation , will be gravely affected . fourthly , using three standards - productivity , the relation of industries and elastic of demand - income , and combining current situation and restricted factors , the paper point out that the principal industries are processing of farm and sideline products , building materials products , metal products , paperboards and machine - made paper , chemical industry and tourism trade
运用生产率上升率、产业关联度和需求收入弹性这三个衡量基准，结合河北省乡镇企业发展的现状与限制因素，对河北省乡镇企业的支柱产业进行了测算、选择，提出农副产品加工业，金属制品业、建材工业、造纸及纸制品业、化学原料和化学制品业，旅游业应作为河北省乡镇企业的支柱产业。