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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。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。