利用建立的用于强腐蚀性气氛高温腐蚀研究的连续称重测量装置,测定了Fe-25Cr铁素体合金在H2-H2S混合气氛中700~900℃及10-1~10-3Pa硫分压条件下的硫化行为。在经过初始孕育期之后,Fe-25Cr合金的硫化动力学符合分段抛物线规律。其腐蚀产物是双层结构:外层为品粒粗大的(FeCr)1-xS(x≈0.24.21at%~0at%Cr);内层是较薄的(CrFe)Sx(26.8at%Cr)等轴晶层。硫化过程受Fe,Cr离子向外扩散的控制

Objectives In this chapter we will look at some general features of Britain and set the scene for the more detailed examination of particular aspects of life there which are dealt with in later chapters

Section A Learning a Foreign Language Section B Keys toSuccessful Online Learning Section C Teacheing Children at Home

1. Interpret the geologic history of the grand Canyon using the diagram below. List the events in order from the oldest(at the bottom of the page) to the youngest( the top of the page). For each event describe the principle or observation you used

4.2.1 Ivan Petrovich Pavlov:Sep.14, 1849 – Feb.27, 1936 Place of birth: Ryazan (Russia) Education: Studied medicine at St. Petersburg (Russia)

5.3.1 About Bruner: Jerome Seymour Bruner(1915-) Born in New York in 1915. 1931,studied law at Duke Uni., then studied Psy. because of the influence of Mcdougall

Object: to describe the fieds generated by electric charges and currents Mathematical Tools: A field is a function describing a quantity at all points in space

1 Introduction: modern mediation and its predecessors The subject of this report, mediation, has been addressed before at conferences of the International Academy of Comparative Law, most recently at the 10th International Congress, held in Budapest in 1978. The Dutch national reporter at that time, Judge

Revision l Expressions Directions: Turn the following English terms into Chinese without looking at your textbook 1 advance payment/ Cash in advance 2 defer payment 3 initial payment 4 Documentary letter of credit

Microbial pathogenesis—process of causing disease Colonization—presence of microbes at site of body – Does not imply tissue damage or disease symptoms – Does imply invasion of site and multiplication