The exact abundances of the three lightest elements are an important test of the so-called Standard Model of physics-the list of fundamental particles found so far and the forces that link them.
物理标准模式理论中有一项极为重要的试验，该试验检测的是宇宙空间中3中质量最轻元素的确切丰度，即需要列出到目前所发现的基本粒子与将它们融合起来的各种作用力。
The list, which relies on country-reported data over the past several years, measures the levels of airborne particles smaller than 10 micrometers - so-called PM10s - for almost 1, 100 cities.
该排名是依据各国在过去几年内报告的数据得出的，测量了近1100个城市空气中小于10微米的颗粒物(可吸入颗粒物)的含量。
The list, which relies on country-reported data over the past several years, measures the levels of airborne particles smaller than 10 micrometers – so-called PM10s – for almost 1, 100 cities.
这份榜单是根据1100个城市中，过去几年国家记录的小于10微米空气颗粒——也称PM10s的污染数据而排出的。
The list, which relies on country-reported data over the past several years, measures the levels of airborne particles smaller than 10 micrometers - so-called PM10 s - for almost 1,100 cities.
该排名是依据各国在过去几年内报告的数据得出的，测量了近1100个城市空气中小于10微米的颗粒物(可吸入颗粒物)的含量。
The list, which relies on country-reported data over the past several years, measures the levels of airborne particles smaller than 10 micrometers — so-called PM10s — for almost 1,100 cities.
该排名是依据各国在过去几年内报告的数据得出的，测量了近1100个城市空气中小于10微米的颗粒物（可吸入颗粒物）的含量。
The list, which relies on country-reported data over the past several years, measures the levels of airborne particles smaller than 10 micrometers — so-called PM10s — for almost 1,100 cities.
该排名是依据各国在过去几年内报告的数据得出的，测量了近1100个城市空气中小于10微米的颗粒物（可吸入颗粒物）的含量。
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