需求量的英文：demand ;quantity demanded
参考例句：
1、Such foods are useful in meeting the day's nutrient needs without exceeding the caloric requirement.这类食物是有用的,它既能满足每日的营养需求又不超过总能量的需求量。
2、Coal is in great demand.煤炭需求量很大
3、The demand for tea is on the decrease each year.茶叶的需求量逐年递减。
4、Bronze continued to be in great demand.青铜的需求量仍然很大。
5、Books on popular science are in great demand.通俗科学读物需求量很大。
哈亮亮魔人
