像波浪，下山缓缓流动的熔岩造成的损失远远多因为它把一切埋在它的路径在熔融的岩石下。
The lava that flows slowly like a wave down the mountain causes far more damage because it buries everything in its path under the molten rock.
其原因包括在喂料区加热时间太短和在过渡区熔融太慢、混合不良、在机筒和口模中存在过多的热量损失。
Causes include heating too quickly in the feed zone, melting too slowly in the transition zone, insufficient mixing, and excessive heat loss in the adapters or die.
如果你考虑冶金的方法你将会发现，它们需要高能的熔融、结晶处理和要特别处理排除与成品损失有关的掺杂物。这种方法可达到的质量与气相处置方法相比仍然是非常低的。
If you look at metallurgical methods you'll find that they need energy-intensive melting and crystallization processes and special treatments to remove dopants which are connected with yield losses.
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