19.1 极谱法 19.2 脉冲极谱法 19.3 循环伏安法 19.4 溶出伏安法

13.1 基本原理 13.2 质谱仪的主要性能指标 13.3 质谱仪 13.4 定性分析 13.5 GC-MS

We seek to characterize the local state of deformation of the material in a neighborhood of a point P. Consider two points P and Q in the undeformed

1.耗费时间长 2.效率不高 3.溶剂消耗量较大，成本较高 4.难于实现自动化 5.不够“绿色

我们先从一种最简单、最容易理解的图形开始分析技术形态。横线或称盘局,就是图形 之中最基本的形状。图表虽然浅显又简单但横线的含义与启示却十分重要,能够确认某种投 资是横线走势,密切观察,一但发现盘局发生变化,把握买入卖出讯号,利润可能以数倍计 图1中的阿城钢铁股价,由98年9月至12月初的走势基本呈一条横线的形状,价位在 4.5元左右,每日波动幅度不超过两三个价位,与12月中旬起逐步飙升至18元的行情不可 同日而语。9月至12月的图形形状就是“横线”,技术上又称盘局

一、微波能介绍 二、微波化学的发展历程

Which of the following expressions represents the rate of work done by the stresses during the deformation of a body of an arbitrary material?

Extend definition to material bodies: total work is the addition of the work done on all particles by forces distributed over the volume W by forces distributed over the surface t·udS

The following stress-strain curves were obtained for dif- ferent materials subjecting the specimen to the loading path(a, b, c, d ). Which one(s) of them correspond to elas- tic material(s)

原子簇(团簇) cluster C660 Roundest and most symmetrical molecule known to man Compressed becomes stronger than diamond Third major form of pure carbon Heat resistance and =0.77nm electrical conductivity