low-pressure melting的意思|示意

They have characteristic of low melting point, low vapor pressure, adjustable acidity, strong solubility and high viscosity.

它具有熔点低、 蒸气压小、酸性可调及良好的溶解度、 粘度和密度等特点。

Because of the low vapor pressure of silicon, the pure elements with higher vapor pressure than that of silicon can be expected to be removed during the melting of silicon.

由于硅的饱和蒸汽压较小，在硅的熔点附近进行高温熔炼可以使蒸汽压较大的杂质元素从硅熔体中挥发出来从而达到去除的目的。

The results show that the properties, especially elongation of low pressure sample castings increases dramatically under the same conditions of melting and heat treatments.

结果表明，在相同的熔铸工艺和热处理条件下，调压铸造试样的强度，特别是伸长率得到大幅度提高。