高精度往往意味着低效率—这是目前精密金属打印面临的行业共性难题。
《唐诗传》：赵柏田著；山东文艺出版社出版。
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"We've had over 150 different children in our home. We've adopted three. So, doing that over those years, we have a lot of children in our home that were [previously] abused," he said.