原理

To improve the precision of tree biomass parameter calculation, this paper explicates the principle, method and process to estimate the parameters of tree biomass by the nonlinear least square according to the formula of allometry method. It gives the formula to calculate the variance and covariance estimated parameters, and reveals the essence of logarithmic linearization regression of power function.

为了提高林木生物量参数的计算精度，根据林木相对生长公式，阐述用非线性最小二乘法求解生物量参数估值的原理、方法和过程；给出计算参数估值之方差与协方差的公式；揭示幂函数对数线性化回归的本质。

The result shows that the repeatability of the method is within the range of the allowable repeatability error. The yield of recovery of standard sample is 95%~105%, and the consistency of results is better and the different of two results is less titan 84 in comparison with ASTM D 5762-95 dilution method.

阐述方法原理，考察方法的重复性在允许重复性误差范围内；标准样品的回收率在95%~105%；与ASTM D 5762-95的稀释法比较，结果一致性较好，两种结果的差值小于84个单位。

This anteal analysed the the cadasteral surveying precision and evaluation by the way of analytic method and, strictly proved the formulae in relation to statistics method,and put forward the theory and method which can examine fortion of boundary point by allowable error,It is valuable in assessment of achievement quality of cadastre survey work developed extensitely at present.

文章分析了解析法地籍测量界址点精度检测与估计的实用方法，对实验统计方法中有关公式给出严密证明，提出利用允许误差对界址点进行检核的原理及方法。

All of which are of empirical origin, yet in the construction of a system of pure morality these empirical concepts must necessarily be brought into the concept of duty, as representing either a hindrance, which we have to overcome, or an allurement, which must not be made into a motive.

因此，虽然道德性的至上原理及其基本概念是先天知识，但它们却不属于先验哲学，因为它们虽不以快乐和不快、欲望和偏好等等都具有经验性起源的概念为其规定的基础，但在义务的概念中毕竟必须把它们或者作为应当克服的障碍、或者作为不可当做动因的诱惑而一起纳入道德性体系的制订。

It introduces application of information construction for deep freezing well from monitoring sidewall 、principle of construction monitoring、means、content and objective,points out it has good foreground as effective means to ensure security of building well in deep alluvium,although it has some deficiency.

从井壁监测、施工监测的原理、方法、内容和目的多方面介绍了信息化施工在深冻结井中的应用，指出信息化施工虽有不足之处，但作为保证深厚冲积层中建井安全的有效方式，有着很大的发展前景。

At present, there are many diagnostic model of the evaporation duct, such as P-J model, MGB model, NPS model and Babin model etc. They are based on Monin-Obukhov similar theory, just it is different that confirms the flux and character scale in the surface layer. These models are only applied for the normality and homosphere in open sea without considering the alongshore effect.

目前国内外蒸发波导诊断模式有P-J模式、MGB模式、NPS模式、Babin模式等，但其基本原理都是依赖Monin-Obukhov相似理论，只是用于确定近地层通量的和特征尺度的方法不同，且仅适用于定常和水平均匀的开阔海域，并没有考虑到蒸发波导的近岸效应。

By coincidence method, the calibrationn technique of ZnO:Ga crystal response to single heavy charged particle was established, the waveform response to the single alpha particle was measured, the experiments data were analysed, and the time response to single proton was gained from the plasma time relationship.

利用符合法原理，建立了ZnO：Ga晶体对单重带电粒子响应的标定方法，得到了该晶体对单α粒子的响应曲线，并对此进行了分析，根据等离子体时间的相对关系得到其对质子的时间响应范围。

It is calculated according as the quantity of air molecules ionized by the alpha rays decayed by radon and its progeny as the air is inhaled to the ionization chamber by the air pump.

采用的测量原理是通过气泵把空气吸入电离室内，通过测量氡及其子体衰变放出α射线使空气分子电离的量来间接测量空气中的氡浓度。

We analyzed and proved that this kind of mounting can cover all useful sky area and has much lower and smoother angular velocity and acceleration than the altazimuth one. IN THIS PAPER WE ALSO DISCUSSED THE RELATIONSHIP BETWEEN TWO MOST OFTEN USED ALT-ALT coordinate systems (SN-ALT-ALT, EW-ALT-ALT coordinate system) and the sidereal hour-angle coordinate system, the horizon coordinate system.

本文推导了ALT-ALT跟踪机架光电人卫跟踪仪原理，分析证明了它在要求的跟踪区域内不存在观测盲区，对同一目标的跟踪角速度和角加速度比地平式机架跟踪仪小且平滑，可实现全天覆盖。

This paper firstly presents the hardware of the alternating current servo system, expounds the theory of neural network, fuzzy c...

本文首先介绍了交流伺服系统的硬件组成，阐述了智能控制领域的神经网络理论、模糊控制原理和模糊神经控制方法。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。