West共同发现人体中的组胺主要来源于肥大细胞中的颗粒 。 West discovered that the mast cell granule was the major source of histamine in the body. 这些尘埃颗粒被认为起源于梅西耶82的星际介质,其实际上与雪茄烟雾中的颗粒 相似。 The dust particles are thought to originate in M82's interstellar medium and are actually similar in size to particles in cigar smoke. 其次,如果吸入微小的粉尘颗粒,空气中的颗粒 会对身体造成影响。 Second, when dust particles are breathed in, the body is impacted by particles in the air. 由悬浮在简单流体中的颗粒 制成的复杂悬浮液的研究最近一直在增长,为工业或芯片实验室技术提供了许多机会。 The study of complex suspensions made of particles suspended in a simple fluid has been growing lately, with many opportunities for industry or lab-on-a-chip technology. 然而,在人口稠密的地区,一种非常常见的污染物,二氧化氮(NO2)以及空气中的 其他颗粒 通常可被视为红褐色的烟雾层。 However, one common pollutant, nitrogen dioxide(NO2) along with particles in the air can often be seen as a reddish-brown layer over many urban areas.
Advantages: Can temporarily reduce airborne particles ; Imaged for the first time the birth of HIV particles in a living cell. They knew that the particles throughout the rings ranged from large to small. Particles (contamination) in the air tend to either float around.ISO29463,高效过滤器和过滤介质去除空气中的颗粒 . ISO 29463“High-efficiency filters and filter media for removing particles from air”. 大多数空气中的颗粒 会慢慢沉淀,沉降速率取决于它们的大小。 Most airborne particles will slowly settle, with the settling rate dependent on their size. 在水处理过程中使悬浮在水中的颗粒 沉降到容器的底部。 Water treatment process in which particles suspended in water sink to the bottom of a container. In addition, particulate impurities in the liquid can also cause the nozzle to be severely eroded. 我们的空气过滤系统可以捕获空气中的颗粒 ,释放纯净、干净的空气。 Our air filtration systems capture airborne particles and release pure, clean air. 这两个标准都根据实验室空气中的颗粒 数量对洁净室进行了分类。 Both standards classify a clean room by the number of particles found in the laboratory's air. Air Purification Technology helps reduce particulate matter from ambient air. 医院通常在手术室使用特殊的空气过滤器,以限制空气中的颗粒 。 Hospitals typically use special air filters for surgical rooms that limit particles in the air. 先进的技术和过滤器,提供集体区域免受有害的空气中的颗粒 。 Advanced technology and filters that give a collective area protection from hazardous airborne particles . 医院通常在手术室使用特殊的空气过滤器,以限制空气中的颗粒 。 Hospitals also utilize special air filters in operating rooms to reduce the amount of dust particles in the air. 在干旱期间,干燥的土壤和野火会增加空气中的颗粒 ,如花粉和烟雾. During a drought, dry soils and wildfires increase the amount of airborne particles , such as pollen and smoke.
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