前言

Introduction Vascularized and bone regeneration are both the most basic aspect in the bone healing process.

前言 血管化和骨再生是骨愈合过程中两个最基本环节，骨组织工程学的迅速发展，为骨再生和脊柱融合提供了合乎生物学原则的思路。

In above-said action, the author introduces the reason why the choose the topic as his research, the study course in China, the importance, the purpose, the theoretical framework and the aim of the study.

在前言部分，笔者介绍了新历史小说在国内的研究现状，并介绍了论文所采用的研究理论、方法及所期望达到的研究目的。

Phases of gas in migration and accumulation are an important factor to influence gas trapping.

1 前言天然气在地下以何种相态运聚一直是油气地质学者们关注的问题。

The process of barrel nickel plating of steel battery shell is strictly controlled in order to reduce production cost and improve product quality.

1前言近年来，我国正在大力推行清洁生产工作，能源问题已经越来越引起人们的注意。随着近期原材料的飞速涨价，节约也已经得到众多电镀厂家的重视。

The foreword introduced the bridge outline and the prestressed concrete continuous beam bridge characteristic and the developing process.

论文的前言介绍了桥梁概述和预应力混凝土连续梁桥的特点及发展过程。

The foreword outlines the history of inland and overseas research on Andrey Bely, providing foundation for the further study and pointing out the significance of the subject.

论文在&前言&中梳理了国内外别雷研究史，说明了本论文选题的依据与研究的意义。

During extruding and blowing mold, the temperature of the extruding machine, the pressure in the extruding process and the part cold and solidification temperature are the three important factors.

前言在挤出吹塑中，物料是在一定的控制温度、螺杆转速和压力下，经机筒的加料段和均化段通过机头把熔融物料送入模具中经吹胀冷却后形成制品。

It is just due to the geographical interconnection and the multiplicity of nationalities,Estonia was once called"Border State".

前言爱沙尼亚，正是由于她的地理位置的交汇性和民族构成的多样性，一度被称为&边缘国家&。

Prestressed concrete continuous box girder bridges are widely used in middle and long span bridges,and will be more widely used.

0前言预应力混凝土连续箱梁桥在中等、大跨径桥梁中得到广泛使用，且有着广阔的应用前景。

The finite element analysis model of pre-pressing contact of low carbon steel resistance spot welding un-der spherical electrode condition is created with the finite element software.

1前言电阻点焊是汽车制造领域中的主导加工工艺，每辆汽车上的电阻焊点平均为3000～5000个[1]，因此电阻点焊的质量很大程度上影响着汽车的质量。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。