可讨论的

The velocities of ultrasonic wave and rock drillability are measured in perpendicular and parallel directions of the bedding plane of core samples which were cut from the approach hole of Chinese continental scientific drilling. Rock drillability index and P-wave velocity anisotropy coefficient are calculated from the testing data; and the results are discussed.

通过室内实验分别测定了岩芯垂直于和平行于地层层面方向的可钻性及声波速度，得到了岩石可钻性各向异性指数和波速各向异性系数，并对结果进行了讨论。

We first state general linear model, ridge-type estimator and general ridge-type estimator, and the constraint biased estimator. And then, we introduce some basic theory about matrix and some conclusion about the admissibility of estimator in Gauss-Markov model. In the third chapter, we discussion several equivalent characterization of the best linear unbiased estimation, we proved that admissible characterization of admissible of linear estimation is as conditional general ridge-type estimation in general linear model. A necessary and sufficient condition that homogeneous linear estimator is admissible estimator is obtained.

本文首先概述了一般线性模型，岭估计及约束岭估计的发展历史和研究现状，在第二章介绍了矩阵的一些基本知识和可容许性的一些基本结论，第三章讨论了一般线性模型最佳线性无偏估计的几个等价条件，以及线性估计的可容许性特征，得到了一般线性模型的可容许线性估计均具有条件广义岭估计的形式，给出了一个齐次线性估计为可容许估计的充分必要条件。

The conception of failure detectability and reconfiguration are discussed for reconfigurable control system.

讨论了可重构飞控系统的故障可检测性、可重构性等基本概念。

If all of the partial derivations exist and only one of them is not continuous,the multivariate function is differentiable.

最后结合实例进行了讨论，结果表明，所有偏导数存在并不蕴含可微，函数可微时可以没有连续的偏导数。

This paper mainly discusses and appraises the insurability of the agricultural risk, and obtain good policy advice.

本文主要讨论了农业风险的可保性，并对农业风险的可保性进行了评价，并提出了增强农业风险可保性的若干政策建议。

In chapter four, the assessment of instantaneous availability of repairable units under exponential distributions is presented.

第四章，讨论了指数分布下可修单元系统的瞬时可用度评定。

The second part is devided into two chapters, it\'s main aim is to study the global solutions to 1-d compressible Navier-Stokes equations, and it is organized as follows:In Chapter 2, we introduce the second boundary value problem for the compressible Navier-Stokes equations in the half space.

第二部分分为二章，主要讨论一维可压Navier-Stokes方程整体解的存在性，其中：第二章讨论了不可渗透问题(流体的速度在边界上为0情形)，其中对温度给出了第二边值条件。

The orbital fracture may lead to many serious consequences including diplopia, enophthalmos and disturbance of ocular movement.

讨论：眼眶骨折可导致一系列并发症，包括眼球内陷、复视和眼球运动障碍，复视和眼球运动障碍与骨折移位和眼外肌嵌顿有关，骨折复位、解除嵌顿多可得到治疗，而眼球内陷的治疗则较为困难。

Two complemented lattices L_1, L_2 are said to be of the same "type" if they have identical sets of tautologies.

一个具有最小元O及最大元I的格L，如果在其中又定义了一个单值的1元运算&′&能适合O′=I，I′'=O，则称L为一可补格，一个命题演算良构式A(设只含命题连接词A，V，～)，如果命它的变数在L中任意取值且将A，V，～分别解释为L中的运算∩，U，′时，A永远得到值I，则称A为L上的恒I式，当两个可补格L_1，L_2上的恒I式集相同时，称L_1，L_2为同型的，本文就是讨论可补格按同型关系分类的问题，所得结果如下：定理设有限可补格L_2适合条件：，存在一良构式A能使则任一可补格L_1与L_2同型的一个充分必要条件是：(A_1)。

In the third chapter,We study some geometric properties and spectral propertiesof the Jacobi operator on a solvable extension G of Heisenberg groups H.In the firstsection,we give the definition of G and some fundamental geometric properties on G.Inthe second section,we discuss the Integrability of certain subbundles and the geometricstructure of the induced foliations in case of integrability.In the third section,we studythe spectral properties of the Jacobi operator of G.

可解李群与类对称空间亦密切相关，Damcek-Ricci空间即是广义Heisenberg的一可解扩张李群，在第三章中，我们构造且研究了Heisenberg群的一可解扩张李群G的几何性质，第一节讨论了G的曲率，李指数映射，整体坐标等基本几何性质；第二章研究了TG的某些子丛的可积性及可积时诱导叶片的几何结构；第三节给出了G的Jacobi算子的特征值和相应的特征子空间。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。