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It compares two different estimation methods,"two step subsample bootstrap" based on moment estimation and Maximum Likelihood Estimation, according to their theoretical basis and computation procedures.

讨论了根据极值理论计算受险价值的两类不同的方法：基于矩估计的"两次子样试算法"和极大似然估计法，并给出了各自理论推导过程和计算步骤。

It compares two different estimation methods," two step subsample bootstrap" based on moment estimation and Maximum L ikelihood Estimation , according to their theoretical basis and computation procedures.

讨论了根据极值理论计算受险价值的两类不同的方法：基于矩估计的"两次子样试算法"和极大似然估计法，并给出了各自理论推导过程和计算步骤。

This paper improves the mass moment substitution method for shaking force complete balancing of planar linkage.

改进了建立平面机构摆动力完全平衡条件的质量矩替代法。

Both the offset and tilted fedcoupling-slot array between the curved guide and sectoral guides and longitudinal radiating-slot array on sectoral guide are analyzed by moment method, taking into account of the effects of finite wall thickness and mutual coupling between the slots, employing the acceleration algorithms to accelerate the summation of slowly convergent series of the self-admittance of the waveguide-slot aperture, and introducing the surface Fock functions to simplify the computation of the self-and mutual coupling of the slots on the surface of cylinder.

采用矩量法分别分析弯波导与扇面波导间偏置倾斜馈电耦合缝阵和扇面波导轴向辐射缝面阵，其中计及有限波导壁厚及缝间互耦的影响，运用级数加速算法对波导中自导纳矩阵元级数进行加速处理，并引入表面Fock函数简化圆柱面上缝口面的自耦和互耦的计算。

Secondly, the simulative software has been made using MATLAB to simulate the suspensory point load、 velocity、 acceleration and pure toque of speed reducer shaft of pumping unit on any place and the displacement、 velocity、 acceleration of main component of pumping unit and the forces of linked point of two components, so the changes of the motion and the force of pumping unit and the geometry parameters' influence on the main performances of pumping unit have been dynamic analyzed.

其次，利用MATLAB，编制了仿真软什，对抽油机在任意位置时的悬点载荷、速度、加速度和减速器输出轴抓矩以及抽油机主要构件的位移、速度、加速度利各构件连接点的受力等进行了仿真，从而动态地分析了抽油机的运动利受力变化及几何参数对抽油机主要性能的影响情况。

Butterworth wavelets have nice properties which include symmetry,the interpolation and vanishing moments.

Butterworth小波具有良好的性质(对称性、插值性和消失矩)。

By the use of the matrix method to solve this system of equations, the transmission matrices of the layered medium are established.

采用求解微分方程组的矩阵法，建立了介质层的传递矩阵。

The method of moment is often effectively used for solving electromagnetic scattering problems. This problem, however, involves a dense system of linear equations.

矩量法是一种常运用于计算电磁散射问题的有效方法，计算电磁散射问题就涉及到一个稠密矩阵的计算问题。

The transmission system may realize to translate power and connect torque tachometer to overall system.

传动系统实现对电机输出动力的传送并且将转矩转速传感器接入整个系统。

The transmission system may realize to translatepower and connect torque tachometer to overall system.

传动系统实现对电机输出动力的传送并且将转矩转速传感器接入整个系统。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。