詞典釋義：

細顆粒物

fine particle 細小顆粒；細顆粒；細粒

常用 權威 重點詞彙

常用

雙語例句

1. 吞噬：人民英雄紀念碑。空氣中充滿了對人類有害的PM2.5極細顆粒物，可以直接被人吸入到肺裡面。

Swallowed: Monument to the People's Heroes. The air was full of the dangerous PM2.5 particulate, which gets deep into the lungs.

2. 結果表明，南京市大氣顆粒物

The results showed that the concentrations of particulate matter, dominated in fine mode, was much higher in winter.

3. 本文討論大氣細顆粒物與人體健康問題.

This paper reviewed about the atmospheric fine particles and human health.

4. 研究人員把這些測量結果和細顆粒物

These measurements were then correlated with data on fine particulate air pollution.

5. 本論文對沙塵暴細顆粒物的DNA損傷和氧化應激作用進行了研究。

In this study, we investigated the DNA damage and oxidative stress effects of dust storms fine particles.

6. 事實上，每家每戶的空氣中都含有一些來自黴菌和炊煙等來源的細顆粒物。

The air inside virtually every house contains some fine particulate matter, coming from sources such as mold and cooking smoke.

7. 大氣細顆粒物誘發人體癌症、心臟病，以及引起強烈的細胞毒性和遺傳毒性。

Atmospheric fine particles can be caused the human cancer, cardiac disease, as well as can create a variety of hazardous effects including acute cytotoxicity and immunotoxicity.

8. 籠罩：中央廣播電視塔：最近幾天空氣中PM2.5細顆粒物值早已大幅超過適宜限值25微克。

Covered: Central Radio & TV Tower. The recommended maximum of 25 micrograms was far exceeded in recent days.

百科

細顆粒物

細顆粒物又稱PM2.5，指環境空氣中空氣動力學當量直徑小於等於2.5微米的顆粒物。它能較長時間懸浮於空氣中，其在空氣中含量濃度越高，就代表空氣汙染越嚴重。雖然PM2.5只是地球大氣成分中含量很少的組分，但它對空氣質量和能見度等有重要的影響。 與較粗的大氣顆粒物相比，PM2.5粒徑小，面積大，活性強，易附帶有毒、有害物質（例如，重金屬、微生物等），且在大氣中的停留時間長、輸送距離遠，因而對人體健康和大氣環境質量的影響更大。

權威

釋義

名詞 PM2.5; particulate matter 2.5; fine particle

重點詞彙

細顆粒物

PM2.5; particulate matter 2.5; fine particle