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

Look at the drawing from a perspective that permits you to see the carbon chain oriented ver tically with the aldehyde at the top and the Ch,oh at the bottom. Both groups should point away from you. When examined from this perspective, the hydrogen is to the left and the hydroxyl to the right with both pointing toward you

Hera’s twin-brother Zeus sought her out at Cnossus in Crete, where he courted her, at first unsuccess￾fully. She took pity on him only when he adopted the disguise of a bedraggled cuckoo, and tenderly warm￾ed him in her bosom. There he at once resumed his true shape and ravished her, so that she was sham￾ed into marrying him

1 At a frequency of 796 Hz, compute Zo,u and for a line having the following parameters: F2230 u H/km,=0.0055 u F, r-6./km, g negligible. 2 At certain frequency, transmission line has Zo=5560°andy=0.005+j0.03np/km The line is 60 km long. A sinusoidal voltage of 100V at the specified frequency is applied to one end. Find:

8.3.1 A/D转换器概述 8.3.2 A/D转换器的主要技术指标 8.3.3 AT89C51单片机与ADC0809接口应用 8.3.4 AT89C51与MC14433接口应用 8.4.1 D/A转换器的主要技术指标 8.4.2 D/A转换器与单片机的接口

A point at which two or more elements have common connection is called node(节点). Suppose that we start at one node in a network and move through a simple element to the node at the other..., if no node was encountered more than once, then the set of nodes and elements that we have passed hrough is defined as path(路径)

6.8 Effect of Environment on Growth 6.9 Microbial Growth at ColdTemperatures 6.10 Microbial Growth at HighTemperatures 6.11 Microbial Growth at Low or High pH 6.12 Osmotic Effects on Microbial Growth 6.13 Oxygen and Microbial Growth

Unit 6 Day-to-day work 6.1 Talking about your work (1)Listening Listen to Ana Campos talking about her working hours. Are these statements true (T)or false(F)? 1 She starts works at 7.30. 2 She finishes work at 4.00 3 She has lunch at 12.00. 4 She has one hour for lunch. 5 She works a 40-hour week

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

13.1 Introduction 13.2 DNA polymerases are the enzymes that make DNA 13.3 DNA synthesis is semidiscontinuous 13.4 Coordinating synthesis of the lagging and leading strands 13.5 The replication apparatus of phage T4 13.6 Creating the replication forks at an origin 13.7 Common events in priming replication at the origin 13.8 Does methylation at the origin regulate initiation? 13.9 Licensing factor controls eukaryotic rereplication