报告显示,这些3D打印机都采用ABS和PLA聚合物作为原料,这些都被评定为超微粒子(UFP)的高排放源(high emitters),排放率与激光打印机运作或烟草的燃烧相似。 由于这些微粒的体积非常小,所以可被吸入肺中,并且直接进入血液循环。
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Los Angeles, Cape Town and Toronto were among the high emitters. The rest fell in between.
洛杉矶,开普敦和多伦多都属于高排量的城市。其余的都处于平均水平。
Other low emitters included Geneva and Prague; Los Angeles, Cape Town and Toronto were among the high emitters.
其它低排放量的城市还包括日内瓦和布拉格; 洛杉矶, 开普敦和多伦多都属于高排量的城市.
That means there would be about a billion "high emitters" in 2030 out of a projected world population of 8.1 billion.
那也就意味着2030年在计划中8.1亿的世界人口减少一个亿的高排放源。
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