The air quality in the city is severely affected by high levels of
particulate matter.
城市的空气质量因颗粒物含量过高而严重受损。
Particulate matter from construction sites can contaminate nearby water sources.
建筑工地的颗粒物可能会污染附近的水源。
Wearing a mask helps filter out fine
particulates during a sandstorm.
在沙尘暴期间戴口罩有助于过滤掉细小颗粒物。
Particulate pollution contributes significantly to respiratory issues in urban areas.
颗粒物污染在城市地区对呼吸系统问题有很大影响。
Scientists analyze
particulate matter in the atmosphere for its potential health effects.
科学家分析大气中的颗粒物，研究其可能的健康影响。
Particulate emissions from diesel engines are being strictly regulated to reduce pollution.
柴油发动机排放的颗粒物正在受到严格控制以减少污染。
Particulate matter in polluted air can cause visibility problems, especially in foggy conditions.
污染空气中的颗粒物可能导致能见度问题，尤其是在雾天。
The government has launched campaigns to educate people about the dangers of long-term exposure to
particulate pollutants.
政府发起了活动，教育人们长期接触颗粒污染物的危害。
Particulate filters are essential components in industrial ventilation systems to maintain a clean working environment.
颗粒物过滤器是工业通风系统的重要组成部分，以保持清洁的工作环境。
Studies show that
particulate matter emitted by fireworks can contribute to air pollution during festive seasons.
研究表明，烟花产生的颗粒物会增加节庆期间的空气污染。
According to calculations, it can save 19,000 metric tons of standard coal, reduce carbon dioxide emissions by about 62,800 tons, and reduce particulate matter emissions by about 24.2 tons each year.
据计算，每年可节约标准煤1.9万公吨，减少二氧化碳排放约6.28万吨，减少颗粒物排放约24.2吨。
The drive system of the 49,900-metric-ton oil and chemical tanker is a methanol hybrid that can reduce carbon emissions by up to 75 percent, nitrogen emissions by 15 percent, and sulfur and particulate emissions by 99 percent, said Zhou Xuhui, vice-president of GSI.
GSI副总裁周旭辉表示，这艘4.99万公吨的石油和化学品油轮的驱动系统是一种甲醇混合动力，可以减少75%的碳排放，15%的氮排放，99%的硫和颗粒物排放。
The first livestreaming session was a popular science broadcast on indoor pollutants, which include not only visible particulate matter, but invisible ones such as mites, dander, bacteria and mold.
第一场直播是一场关于室内污染物的科普广播，这些污染物不仅包括可见的颗粒物，还包括不可见的物质，如螨虫、皮屑、细菌和霉菌。
PM2.5 refers to particulate matter with a diameter of 2.5 microns or less, which is considered hazardous to human health.
The average density of PM2.5 -- fine particulate matter that causes smog -- fell 15.6 percent compared to a year earlier.
In 2001, the company officially launched its first particulate respirators tailored for Chinese customers and manufactured in the country.
In September, its PM2.5 level fell to 18 micrograms per cubic meter, while concentrations of inhalable particulate matter — sulfur dioxide, nitrogen dioxide and carbon monoxide — had all turned first-class by national standards on air quality.
It said that by 2025, the concentrations of particulate matter with a diameter of 2.5 micrometers or smaller (PM2.5) in cities at or above the prefectural level are targeted to decrease by 10 percent compared to 2020.
The use of clean energy in shipping can help reduce sulfur oxide emission by 99 percent and particulate matter by 98 percent, compared with current oil tankers.
The KN95 mask standard, issued by the Ministry of Emergency Management of China, is a national class 1 standard for particulate filtering masks.
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