From the pl spectrum, the UV emission peak of the sample annealed in vacuum increase clearly and deep-level emi.
从光致发光光谱中发现，真空退火后的样品的紫外光谱峰显著增强，而深能级发射峰几乎消失。
LaF3 single-layer coatings were prepared by thermal boat evaporation at different deposition rates. Some of these films were annealed in vacuum.
用热舟蒸发方法在不同的沉积速率下制备了LaF3单层膜，并对部分单层膜进行了真空退火。
From the adhesion phenomena of GH5188 alloy plates annealed in vacuum furnace, it is necessary to pay more attention to the evaporation of metal elements during vacuum heating.
GH 5 18 8合金板材在真空退火中发生的粘接现象，说明必须重视金属元素在真空热处理中的蒸发问题。
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