前言

Supramolecular chemistry is one of the new branches of the chemistry,it has been regarded as one of the important headstream of new conception and advanced technique.

超分子化学是化学领域的一门交叉学科，被认为是21世纪新概念和高新技术的重要源头之一，是当代化学的前言。

Heat loss coefficient is one of the most important parameters in the solar-thermal conversion of evacuated tubular collectors.

一、前言热损系数是真空集热管的一个重要性能参数，它直接影响集热装置的效率及最高集热温度。

Preface As the scaffold of human body, skeleton function as support and weight-bearingsystem, hematogenesis.

前言 骨骼作为人体的支架，担负着支持、承重、造血等功能。

HIC is a common testing method in corrosion experiments.

0前言HIC试验是检测钢材氢致裂缝敏感性的方法。

This thesis investigates the optimiaztion problem of the non-linear field with hierarchal estimation and comprehensive coordination control.

O前言 一般一个动态系统(例如拟建一座火力发电厂或像国家基本建设投资规划等)，通常在某一稳定状态下运行。

In this article, a mathematical method for calculation of model of a population Ⅱ star using high speed digital computer is discussed.

前言 我们计算了中型质量的J匠星模型，采用恒星质量为太阳质量的1 。2倍。

Today, human society has entered the globalization of information and global information, network high-speed development stage.

前言 当今，人类社会已经进入信息全球化和全球信息化、网络化的高速发展阶段。

And the content of mercury and arsenic was determined by means of hydride generation atomic fluorescence spectrometry.

1前言砷和汞在历年的农业部耕地地力调查中，都被列为重点监督的有害元素。

Light hydrocarbon tank is one of the main fixtures of natural gas production.

前言轻烃储罐是天然气生产中的主要静装置之一。

Introduction: Hypoglossal nerve injury is an uncommon complication after anesthesia and can recover completely.

前言：舌下神经受损在麻醉后是不常见的并发症而且可以完全恢复。

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。