主要动力

The main contents of this dissertation are as follows:(1) A new networked PC cluster parallel computing environment is set up,which is simple and easy to use. The detailed method of configuration and use is presented.

本文主要在网络微机机群并行计算环境下，对弹性静力、弹性动力和弹塑性结构的并行边界元分析方法进行了研究，并在水工结构分析中进行了实际应用。

This research focuses on the investigation of application of compound combustion engine in generating sets. Through theoretical analysis and practical applications of diesel and generating sets produced by our company, comprehensive investigations have been carried out in such aspects as soot and NOx emissions reduction from compound combustion engines, specific fuel consumption reduction, improvements of fuel economy of generating sets and compound combustion engine meets special power match of generating sets.

本课题主要着眼于组合燃烧发动机在电站机组中的应用研究，通过对本公司生产的柴油机和电站机组的理论分析和具体实践，在组合燃烧发动机减少碳烟和NO_x排放，降低当量比油耗，提高机组的使用经济性，以及组合燃烧发动机满足电站机组特殊的动力匹配方面进行了创造性的总结，并论证了适合我国技术水平和能源状况的组合燃烧理论。

In chapter three, the problem of the nonlinear dynamical stability of the shallow reticulated conical shell is analyzed.

在第三章中主要研究了扁锥面网壳的非线性动力稳定性问题。

There are two fundamentally different dynamical systems: those with discrete time variable and those with continuous time variable.

本文主要针对离散时间动力系统的动力学性质研究，包括差分方程及离散人工神经网络两个方面的研究。

Wherever sediment cores were collected by gravity corer,the length of the cores became shorter than the original length,and this compaction processes take place not only inside the sampling tube but also beneath the bottom of the sampling tube.

其中，采集柱状样是传统的、也是最主要的一种手段[6]，通过分析柱状样沉积物可以获得相关的沉积环境和沉积动力[7]、沉积物组分的的变化[8~9]、沉积物

Considering characteristics of Grotto Relics, the influence factors and dynamic finite element analysis methods on deformation stability grotto country rock are discussed.

针对石窟文物的特点，阐述了影响石窟围岩变形稳定性的主要因素和动力有限元分析方法。

Chapter two study iteration of a serial of polynomial, discussed the sufficient and necessary conditions and denseness of the Julia set, the relative random dynamical system is constructed by some high degree polynomial. In addition, it discuss the Mandelbrot set of a kind of polynomial.

本文的第二章主要研究多个函数的特定迭代序列，讨论了高次多项式的随机复动力系统的Julia集的连通的充分必要条件以及稠密性问题，同时还讨论了一类多项式函数的Mandelbrot集。

Ablation of TiC coating at high temperature is mainly formed by mechanical denudation due to hig...

碳化钛涂层高温烧蚀以机械剥蚀为主，高温、高速的焰流气动力是产生这一现象的主要原因。

Its main products include high-performance diamond bit of oil, drill work, such as underground power drill.

其主要产品有高性能的石油金刚石钻头、工程钻头、井下动力钻具等。

The mud diapir structure in Yinggehai Basin,South Chian Sea,was been formed and evoluted mainly by thermodynamic actions.

莺歌海盆地泥底辟构造主要是在热动力作用下形成和演化的，包括热传导和热对流作用。

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。