估算

This paper takes one low-speed-circumgyrate rocket with a empennage asa research object, set up a relevant reference frame, analyse the strength andmoment on the amended rocket, ratiocinate the sports equation with 6 DOF; analyse the factors which cause terminal windage between pratical trajectoryand fiducial trajectory, take certain rocket for example, make use of theemluator on the influence of estimating precision caused by measuredinformation, find the speed, the trajectory obliquity, the trajectory setoverand the coordinate are the sensitive factor arosing terminal windage of thetrajectory; introduce the developing status of detecting technique, and basedon the actuality, choose the radar in the ground as measure equipment; simplydesign and analyse the setting and inflame control of the impulse engine onthe amended rocket; design the amend method and validate its feasibility takingthe use of emluator.

本文以某型低速旋转尾翼火箭弹为研究对象，建立了相应的坐标系，详细的分析了作用在弹道修正弹上的力和力矩，由动量定理和动量矩定理推导出了在一般形式下的弹道修正弹的空间六自由度的运动方程；对引起弹道落点偏差的因素进行了分析，以某口径火箭弹为例仿真了可测信息量对估算精度的影响，发现速度大小、弹道倾角、弹道偏角和位置坐标是引起落点偏差的主要因素；对弹道探测技术发展现状作综合性阐述，并基于现状，选用地面火控雷达作为测量装置；对弹道修正弹上脉冲推力器的安装和点火控制方法进行了简要的设计与分析；设计了弹道修正弹指令修正的修正方法，通过数字仿真验证了方法的可行性。

An improved method of estimating the square root, reciprocal square root, and reciprocal of an input value in a computer system.

一个在计算机系统中估算输入值的平方根，倒数的平方根、和倒数的改进的方法。

The measured data were fitted with the modified rectangular hyperbola models of the photosynthetic responses to flag leaf intercellular CO2 concentration A/C(subscript i and air CO2 concentration A/C(subscript a aimed to approach the reasonability of the fitted results obtained from the models.

结果表明：由A/C和A/C修正模型所给的光合能力和CO2补偿点几乎相同，但得到的光呼吸速率和初始羧化效率则完全不等；产生这种差异的原因是利用叶片气体交换测定的数据所计算的胞间CO2浓度并不是植物叶片本身的胞间CO2浓度；A/C修正模型比A/C修正模型更为合理是因为A/C所估算的光呼吸速率接近测量值。

The Critical field for red shift to blue shift is estimated.

并估算了由红移到兰移转变的临界电场值。

The function system can be reduced to a minimal cut-set representation.

依据投资-效益准则，提出了建筑物系统功能失效损失估算模型。

Three firms estimate for the refit of the bar.

三家公司都以书面形式对这个酒吧的重新装修成本做了估算。

Three firm estimate for the refit of the bar .

三家公司都以书面形式对这个酒吧的重新装修成本做了估算。

The objective of the present paper was to develop a methodology to estimate soil attributes using spectral reflectance.

研究的目的是应用波谱反射建立一个新的研究方法来估算土壤属性含量值。

For the first time, we combined ultrasonic wave and time domain reflectometry to study the relationship between gas hydrate saturation and acoustic parameters in the process of gas hydrate formation and dissociation, and got fine results.

本文首次利用超声和时域反射联合探测技术，研究了沉积物中水合物饱和度与声学特性的关系，并对时间平均方程、伍德及其修正方程、李权重方程和BGTL（Biot-Gassmann Theory by Lee）理论等常用的水合物饱和度估算模型进行了验证。

All of this makes the net benefit of reforestation extremely difficult to measure.

所有这一切都使得重新造林的纯利益极难估算。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。