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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。
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"They're losing lots of habitat - lots of woodland," says Spencer. "And we're also knocking down old buildings, making our homes warmer, more airtight - there are less places for them to go."。业内人士推荐爱思助手下载最新版本作为进阶阅读