按固定时间间隔发出的采购或生产订单，包括期内变动需求。
A purchase or production order that occurs at a regular interval and covers the variable demand during that period.
此外，还有很多情况下这些格式的变化非常频繁-因为变动是业务合作伙伴的需求。
Also, there are many situations where those formats change very frequently - based on the changes in the business needs of partners.
它也使得进行更为复杂的价格计算提供了可能，即电价根据可用电量以及需求时刻变动。
It also enables more sophisticated billing, with the price of electricity changing minute by minute, according to availability and demand.
制糖业人士抱怨称，尽管乙醇价格随全球蔗糖需求情况会上涨或下跌，但是巴西汽油价格不会随石油价格变动立刻调整。
The sugar people complain that, although the price of ethanol rises and falls with world sugar demand, petrol prices in Brazil do not adjust quickly to changes in the oil price.
这些变动是为了回应人们对于世界上最古老的年度波士顿马拉松赛跑日益狂热的需求。
The changes are a response to the increasing demand for the Boston marathon, the world's oldest annual marathon.
但银行也表示剩余的资金“也将用来加强现有的资本基础，以适应监管法规的变动及满足业务的增长需求。”
But it said the extra cash "will also support the existing capital base to accommodate regulatory changes and business growth".
唯一不带来变动的价格就是p*，即能够使需求数量等于供给数量的均衡价格。
The only price which doesn’t lead to price changes is p*, the equilibrium price in which the quantity supplied equalsthe quantity demanded.
可以想像，临时工与time &more的护士一样，根据人员需求变动，可以“呼之即来，麾之即去”。
You might imagine that thetemporary workers, like the nurses employed by time &more, arecalled in when demand is high and sent away when it slackens.
图13：需求变动—通过修改的数量进行测量。
Figure 13: Requirements churn (volatility) - measured by number of revisions.
唯一不带来变动的价格就是p*，即能够使需求数量等于供给数量的均衡价格。
The only price which doesn’t lead to price changes is p*, the equilibrium
在底层系统技术以快速的步伐发生变化时，需求变动性就会大量地滋生；这会导致设计和组件的提早退化，否则它们是可重用的。
Requirements volatility stems largely from the rapid pace at which underlying system technologies change; this leads to early obsolescence of designs and components that might otherwise be reusable.
但是，我们必须考虑的更重要的变动是，需求的变动对成本和产量这二者的影响。
But the more significant change, of which we have to take account, is the effect of changes in demand both on costs and on volume.
用例标题上会有一点的变动：需求uc4被删除了，而添加了需求UC5(图15，“对已分支的需求文档所做的修改”)。
Here, there's a modification in the use case title: the requirement UC4 has been removed and the requirement UC5 has been added (Figure 15. Modification on branched requirements document).
但为满足这种需求，我们要再度面对全球化下市场变动的问题，而我们从痛苦的经验中已学习到，这个问题是可能会带来极度负面的影响的。
However, satisfaction of this demand brings us back to the problem of the market dynamics of globalisation, which, as we all learnt from bitter experience, can have very negative effects.
有效需求和货币数量不作同比例地变动。
Effective demand will not change in exact proportion to the quantity of money.
技术人员认为，股票价格的变动，只不过是供应和需求变化的反应。
Technicians believe that stock price movements are nothing more than the reflection of changes in supply and demand.
城市的生活方式，退有很高的需求，他们更比变动趋势。
Urban lifestyle retreats are in high demand and they are much more than mutable trends.
要欢迎变动的需求，即便是在开发的晚期也不例外。敏捷过程利用变更来为客户获得竞争优势。
Welcome changing requirements, even late in development. Agile processes harness change for the customer's competitive advantage.
当经济增长时，在技术、生产要素供应量和需求方面会有重大的变动。
As economies grow, there are major changes in technology, factor supplies, and demand.
货币供应量的变化难以解释价格水平的变动，价格水平的波动除受总需求变化的影响外，还受总供给变化的影响。
The change in money supply cannot explain the change in price level. Except being affected by general need, price fluctuation is also affected by the change of general supply.
产品成本降低变动的经济可行性，总是决定于对产品的继续需求情况。
The economic feasibility of cost-reducing changes will always depend on sustained need.
货币供给和货币需求的失衡是影响外汇储备变动的主要原因。
The out-of-balance of monetary supply and demand is the basic factor affecting foreign reserves change.
需求随季节而变动。
我国未来住房需求的变化将受到人口、家庭户数量和结构变动的影响。
Housing demand in China is greatly determined by future population and household changes.
这表明，我国供给能力的显著提高，使得需求的变动带来的通货膨胀压力减小。
This shows that the supply ability increases a lot, thus, the change of aggregate demand will has little pressure on inflation.
葡萄替代品价格的变动对葡萄的价格变动有明显的影响，但对葡萄的供给和需求影响不显著；
The price of substitute products has remarkable influence on grape price, but has no obvious influence on the supply and demand.
我们要求变动，需求公正，要求平衡。
人口是市场的主体，人口年龄结构的变动必然也会引起市场的消费需求和发展趋向的变化。
Population is the main of market. The change of population age structure will bring change of consuming demand and development trend.
人口是市场的主体，人口年龄结构的变动必然也会引起市场的消费需求和发展趋向的变化。
Population is the main of market. The change of population age structure will bring change of consuming demand and development trend.
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