The phase precipitation behaviour in GH4199 was studied by means of phase analysis technology and TEM observation, as well as the calculation of electron vacancy number.
采用物相分析和透射电镜(TEM)方法研究了GH4199合金中不同温度长期时效处理条件下相的析出规律·结果表明,合金经长期时效处理后γ′相在700～800℃时析出比较充分,800℃以上开始回溶,γ′相在高温长期时效过程中的长大规律符合Ostwald理论,同时合金中有TCP相的析出·GH4199合金电子空位数为2 31到2 35,比镍基合金中μ相析出的临界电子空位数2 30略大,故当合金在高温下具有足够的热暴露时μ相会析出;合金的电子空位数虽不高于σ相析出的临界值,但由于γ′相的大量析出,造成合金基体中的Cr,Mo等形成σ相元素局部相对含量剧增,有可能导致σ相析出
The calculations of bond order of the diatomic molecules with both the molecular orbital theory and the hypothesis of electron hole pair give the same results,but the latter is simpler for dealing with covalent molecular bond order.
以双原子分子为例，用分子轨道理论和作者提出的电子空位对假说两种理论方法分别计算这些分子中共价键的键级，并对计算过程和结果进行了讨论。
Development of an electronic optometer based on SCM;
单片机电子视力计的研制
Clinical analysis on liposuction adopting electronic liposuction machine;
医用电子去脂机行抽脂术临床效果分析
Research on the development of automobile electronic information industry ——based on the theory of industry growth;
基于产业成长理论的中国汽车电子信息产业发展研究
Mixed proton-electron conductors for hydrogen permeation;
质子-电子混合导体透氢膜
Study of ion catch technology of electron microscopy in virus detection of patient s excrement;
离子扑捉电子显微镜技术检测患者粪便中病毒的方法
Teaching research on electric and electron speciality oriented art recruiting students;
面向文科招生的电气、电子专业教学研究