加热后的聚氨酯被低压注入模具在高温下成型。
Hot liquids are introduced to moulds at low pressure and cured at high temperatures.
注入模具的是金属粉末和塑性流动剂构成的均匀混合喂料。
The feedstock injected into a mold is the mixture of metallic powder and plastic binder.
加锡是很重要的，因为它可以改进熔融合金的流动性，从而使其易于注入模具。
Tin is important as it imparts an improved "fluidity" to the molten alloy and helps in mold filling.
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