需要量的英文：
demand quantity
requirement

• Television sets and stereo sound sets are now in great demand
  电视机和立体声音响设备现在的需要量很大。
• Nutritionists set requirements of dietary fiber at 25- 50 g\day.
  营养学家规定膳食纤维的需要量为25～50g\日。
• Pure wool is often mixed with other type fibers and recovered wool to meet the demand.
  纯羊毛通常与其它纤维或再生毛混纺以满足需要量。
• People who are overweight should look at their calorific, nutritional and dietary requirement beforehand.
  超重的人应该看看他们对热量，营养和规定食物的需要量是什么。
• The vitamin B12 requirements appear to depend upon the levels of choline, methionine and folic acid in the diet
  维生素B12的需要量决定于食品中胆碱、蛋氨酸以及叶酸的含量。
• According to this model a monolayer of fines coating the coarse is the minimum needed to bring the viscosity down
  按照这个模型，粗粒物料覆盖以单层细粉是使粘度降低至细粉粘度的最小需要量。

• It is the demand, stupid.
  傻瓜，答案是需求。
• Demand exceeds supply. The supply is not adequate to the demand．
  供不应求
• I demand a recount.
  我要求重算。

• dimensionless quantity
  无因次值|无量纲的量
• Bill of quantities: The specification of the quantity of materials to be used.
  工程量清单;建筑工程清单;数量清单:指项目所用材料的数量及其规格的清单。见priced bill of guantities
• Quality is better than quantity
  不求其多,但求其精

• Is the requirement compulsory?
  必须按这个需求做吗？
• In practice, this will often require a prioritization of your job requirements.
  实务上，这往往需要重新调整工作的优先顺序。
• All systems requiring accurate timing will require a crystal.
  所有需要精确定时的系统都要用晶体。