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- The Al-Cu eutectic brazing metal is made to braze pure aluminium substrate in vacuum. The diffusion phenomenon of Cu in pure aluminum bar under different brazing temperature and heat preservation time is investigated by means of SEM and EDS. 制备Al-Cu共晶合金钎料,用SEM和EDS研究不同钎焊温度和保温时间条件下,纯铝棒料基体对接真空钎焊接头Cu元素的扩散行为。
- The interface diffusion phenomena of BTO/Si were systematically studied by Auger electron spectroscopy(AES) and X-ray photoelectron spectroscopy(XPS). 通过俄歇电子能谱(AES),X光电子能谱(XPS)等分析手段系统研究了在Si基片上直接生长BTO铁电薄膜过程中的界面扩散现象。
- Mathematical model of a diffusion phenomenon in social-economic region 社会经济领域中一类扩散现象的数学模型
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
- Magnetism is considered as a molecular phenomenon. 电磁被认为是一种分子运动。
- Keywords EDXRF;Blue and white porcelain;Non destructive testing;Diffusion phenomenon;Half value thickness; 青花瓷器;无损检测;扩散现象;半值厚度;
- Clouds cause the diffusion of light from the sun. 云使阳光漫射。
- This is a diffuse phenomena, its specular equivalent would be something like transparency or refraction. 这是一个漫的现象,它会像镜面等于或折射透明度。
- But their so-called prosperity is only a temporary phenomenon. 但他们所谓的繁荣只是一个暂时的现象。
- International terrorism is not just a recent phenomenon. 国际恐怖主义并不是近年才有的现象。
- The phenomenon of cot death has yet to be explained. 婴儿猝死的现象仍然不可解。
- The employment problem tends to be a city phenomenon. 就业问题常常是一个城市现象。
- What is still really lacking is the physical phenomenon of diffusion. 我们还没有实现漫反射的物理现象。
- Insulation used to prevent heat diffusion, as from a steam pipe. 绝热材料用来防止热量散失的绝热材料,如从蒸汽输送管上
- Then she began to observe a curious phenomenon. 这时她开始看到一个奇怪的现象。
- We think of magnetism as a molecular phenomenon. 我们认为电磁是一种分子现象。
- diffusion phenomenon 扩散现象
- Traditional systems have used oil diffusion pumps. 常规的系统使用油扩散泵。
- The diffusion process seems to be accelerating. 传播过程看来正在加速。
- We combat the unhealthy phenomenon. 我们同不良现象作斗争。