The wax positive is invested with a mold made of refractory materials and heated to melt the wax, leaving a narrow cavity Between the core and the investment.
正蜡像外面披盖一个耐火材料制成的模具，然后加热使蜡熔化，留下核心与披盖模具之间一个狭窄的空腔。
The completed assembly is coated with a ceramic slurry, allowed to dry and then heated to melt out the wax leaving a ceramic mould into which the molten alloy is poured.
成品装置要镀上一层陶瓷泥浆，将陶瓷泥浆烘干再将蜡加热溶化，只留下陶瓷模型，这样融化的合金就可以从中倾倒出来。
True, some simple forms of heat recycling have been around for a while: using heated waste water to warm flooring and melt ice on driveways, for example.
诚然，人们采用简单的余热利用方式已有一段时间了，例如，用有较高温度的废水作为地热取暖和融化车库前私家车道上的结冰。
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