求翻译以下一小段英文,用翻译工具的请绕行.谢谢! (PS:这是关于焊接的一段英文,翻译的时候绕得有点晕~)

求翻译以下一小段英文,用翻译工具的请绕行.谢谢! (PS:这是关于焊接的一段英文,翻译的时候绕得有点晕~)
This range is the difference between the "solidus" temperature which is the highest temperature at which the alloy is completely solid (i.e., the point where melting starts when the alloy is heated) and the "liquidus" temperature, which is the lowest temperature at which the alloy is completely liquid (i.e., the point where solidifying starts as the alloy is cooled.)