按照估算的精确度范围可以将估算分为3大类，量级估算、预算估算和确定性估算。
There are 3 types of estimates according to the accuracy of estimate: order-of-magnitude estimate, budget estimate and definitive estimate.
这项研究的估算是很好的新的信息来源，但卫星图像也有其本身的局限性和不确定性，我们正在与有关科学家一道解决这些问题。
The study’s estimates are a good additional source of information but satellite imagery has its limitations and uncertainties that we are working with the scientists to reduce.
风险的大小与估算的不确定性成正比。涉众希望尽早知道在规定的时间内项目可以取得多少价值。
Risk is directly proportional to uncertainty in estimates, and stakeholders typically want to know sooner rather than later what value the project can deliver in the stipulated time.
不可否认的是，气候变化着实为农业产量的估算增加了很大程度的不确定性，但那正突出了通过监管和调查研究来改进预测的重要性。
Admittedly, climate change adds a large degree of uncertainty to projections of agricultural output, but that just underlines the importance of monitoring and research to refine those predictions.
倘若要估算这些不确定性至少需要等到明年10月份的臭氧层空洞出现。
Sorting out just what sort of uncertainty accounting is required should take at least until next October's hole shows up.
二是实时修正模型，确定性模型只能作离线估算。
The deterministic model can only be used for off—line estimation.
通过采用最小线性方差组合，实现了三种费用估算方法随机不确定性的优化综合。
The paper realizes the optimization combination of uncertainties by using minimum linear variance combination.
文中提出了一种更有效的前向BP神经网络，考虑了导弹成本中的一些非确定性的影响因素，建立了导弹成本的估算模型。
Considering some uncertain influencing factors in the missile cost estimation, this paper provides a more effective BP neural network to set up the estimation model of the missile cost.
重点讨论滞膜模型及其传输速率常数的确定，进而分析DMS海气通量估算中存在的不确定性。
Stagnant film model and the transfer velocity are mainly discussed and the uncertainty existing in the estimate of DMS sea-air flux is analyzed.
有关法规规定保守性分析和最佳估算加不确定性分析的评估方法均可用于核电厂认证级LOCA分析。
According to the regulations, both conservative and best estimate methodology can be used for licensing LOCA evaluation.
本文论述了复杂的技术和外界环境条件下，三种费用估算方法涉及到的随机不确定性及其表征参数——标准差。
This paper discusses uncertainties of three kinds of cost estimation methods and their describing parameters-standard deviation in complicated environment of technology and outside.
结果由于通过动态干扰补偿算法估算系统不确定性，消除了滑膜算法固有的抖震现象。
Results as the dynamic disturbance compensator was used to estimate the uncertainty of system, the chattering effect in sliding mode control algorithm was eliminated.
结果由于通过动态干扰补偿算法估算系统不确定性，消除了滑膜算法固有的抖震现象。
Results as the dynamic disturbance compensator was used to estimate the uncertainty of system, the chattering effect in sliding mode control algorithm was eliminated.
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