If the data is held externally, these steps are not necessary, and the data can be loaded lazily on demand.

如果在外部保存数据，则不需要这些步骤，而且可以根据需要装载数据。

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Based on the necessary modeling accuracy for radiating characteristics and movement characteristics of infrared targets, it can meet the design and debug demand for the guidance algorithm of missile.

在保证必要的红外目标辐射特性和运动特性建模精度基础上，采用这种方法可以满足导弹制导算法的研制和调试需要。

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We can establish a series of criteria of CPCS on the basis of the necessary demand of residents by use of analysis of ELES, and the multiplier of the studying costs to PDI.

可在ELES法计算的居民基本消费需求额和年生均学习成本与居民可支配收入的倍数的基础上建立贫困大学生判别标准体系。

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However, such an overhaul should not have to mean a replacement or upgrade to existing systems, but rather a universal platform that connects throughout the bank, interrogating all the necessary data on demand, and using the latest high speed technology.

FORBES: SAS Moves Enterprise Risk to Near Real-Time

Even skeptics will struggle to resist the pressure for further money printing from politicians and those mainstream economists who have staked their careers on the belief that deter-mined central banks can always conjure up the necessary demand to keep economies growing.

WSJ: Central Bankers' Change

If we allowed the nonprofit sector to build the kind of demand for philanthropy that Hollywood builds for movies, we would be on our way to the necessary scale.

WSJ: Why Can't We Sell Charity Like We Sell Perfume?