计算误差

Based on the finite strain theory, a subroutine‐UEL for ABAQUS is developed , and the residual pore pressure under wave load is computed, and stability of soil around pipeline and seabed is analyzed. Regarding the liquefaction soil as model, a subroutine‐UMAT for ABAQUS is developed , and the behavior of pipeline in liquefaction soil analysis qualitatively.

并据此模型对复杂波浪荷载下埋置管线的动力响应进行分析，发现波浪的非线性和随机性以及管线-土体之间的接触效应对计算结果的影响十分显著，如果忽略这些因素，则会在分析埋置管线动力响应时造成较大误差。4。

The study indicate that the model is in good agreement with the experimental data during cross-flow ultrafiltration in literatures.

结果表明：模型获得的膜通量计算值与实验值的平均误差为4.15%，模型能较好地描述错流超滤中的渗透通量随时间的变化规律。

According to this method, all the undetermined parameters can be determined without fitting them to experimental data.

用这种模型计算旋流器的迁移率不需用实验数据拟合待定参数，避免了实验误差的影响。

Rippling errors of amplitude and phase angle of the force are analyzed and calculated when stator windings are fed with unidirectional sine current.

分析和计算了定子绕组采用单向正弦电流供电时电磁力幅值与相位的波动误差。

There is very little information for general cell diagnosis, which is universal problem in aluminum reduction process. Studies on technique of getting and processing cell state parameters have been made, where direct detection, on-line emulation and fuzzy information processing are combined. Then a new method of dynamic temperature detection, it's model and formula are proposed, and a practical equipment was designed. 3. Information about aluminum reduction process state are very different, not enough and unprecise, while there are many knowledge based on experience.

2为解决目前铝电解过程控制系统中普遍存在的、能用于槽况综合解析的信息不足这一问题，研究了综合运用直接检测技术、在线仿真技术和模糊信息处理技术等技术获取和处理电解槽的各种状态参数和信息的方法；并提出了一种新型的动态测温方法，推导了该方法的数学模型和计算公式，给出了公式的误差分析并设计了一个实验用动态测温装置，向实现对电解质温度的直接检测和控制迈出了探索性的一步。

The covariance matrix of receive data is eigendecomposed. and the signal subspace is obtained. Then the channel vector is projected onto the subspace, and more accurate channel vector is obtained. According to the beamforming algorithm, the detection filter coefficients are calculated.

将接收数据的协方差矩阵进行特征值分解，得到信号子空间，将存在估计误差的信道矢量向该子空间投影，就可以得到较为准确的信道矢量，然后利用波束形成计算出检测滤波器的系数。

Engineers can compare calculation results with the tunnel design curve in order to obtain deviation values of horizontal position, vertical position and angles of the shield machine, and can adopt these results to control tunneling operations of the shield machine.

隧道设计曲线是在城市三维坐标系中设计的，要得到盾构机掘进过程中的误差，就必须通过测量计算得到盾构机在绝对坐标系中的坐标位置和方位角。

We have discussed the basis set superposition error produced in calculating the weak interaction of molecular complexes.

对用从头算方法计算分子间相互作用时存在的基组重叠误差问题进行了探讨。

Further improvements can be obtained by properly distributing different weighted coefficients aq on sampling points both for the pass band and stop band.

通过为每一个频率采样点设置一个权重系数，并根据计算出的，判断在通带和阻带内哪个取样点的误差最大，适当地调整权重系数，我们就发展出了基于RBF的FIR滤波器优化设计算法。

The solutions were found to be good agrees with experimental results. The transfer characteristic of air dry/wet bulb temperature and spraying water temperature were discussed. The LMTD method based on this mathematical model is applicable to design and verify for the plate wet air cooler. The ratio of the wet bulb heat transfer coefficient to the heat transfer coefficient under air-cooled conditions was investigated theoretically and experimentally. The relative errors of the ratio between theoretical and experimental valves are small than 7 percent.

分别得到了平行流型式微分方程组的解析解与交叉流型式的近似解析解，实验验证了该解析解具有较高的计算精度；探讨了空气干湿球温度与喷淋水温的迁移特性；分析得到基于湿球温度迁移模型的对数平均温差法在湿式空冷器的设计与校核计算中是适用的，给出了空气湿球换热系数与空冷时空气对流换热系数比值的理论与实验确定方法，比值系数理论值与实验值比较最大相对误差小于7％。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。