1) ρ(PM_(10))
ρ(PM10)
2) PM_(10)
PM10
1.
The mass concentration characters and the sources of water-soluble alkali metal ions in PM_(10) in 2004 and 2005 in Beijing were analyzed by using the system of rapid collection of particles.
研究了北京大气可吸入气溶胶(PM10)中水溶性金属盐的变化特征,并对其来源进行了分析。
2.
The mass distribution,emission characteristics and the composition at different size particle of PM_(10) were studied.
应用基于空气动力学直径分级的低压撞击器(LPI)对4台燃煤锅炉除尘器前后飞灰颗粒进行13级采样,研究了不同除尘器入口和出口PM10的颗粒粒径排放规律及元素分布特性。
3.
An analysis of a PM_(10) heavy pollution process in Beijing in November in 2000 was carried out to diagnose the weather pattern that creates the mass concentration of PM_(10).
对北京2000年11月的一次PM10重污染过程进行分析,以期进行造成PM10质量浓度增量的天气型诊断。
3) PM 10
PM10
1.
The pollution status of PM 10 (particles whose diameter is less than 10mm) and the characteristics of meteorological conditions are analyzed by using the daily reports of atmosphere quality of Zhengzhou City in 2003 and the synchronic meteorological observing data.
利用郑州市区 2003年空气质量日报和同期气象观测资料,分析了郑州市区PM10 ( >10μm可吸入颗粒物)污染状况及相关气象条件变化特征,结果表明:郑州市区PM10污染全年各月均以 2级为主,占总样本数的77。
2.
PM 10 samples from eight wind directions were collected with ACCU(Automatic Cartridge Collection Unit)method for 3 months on one monitoring site in Wusong industry area of Shanghai,and PM 10 concentrations were measured in samples and 18 inorganic elements concentrations were measured by PIXE(proton-induced X-ray emission) method.
[目的 ]了解吴淞工业区空气中PM10 和无机元素污染状况。
3.
Origin of atmospheric polycyclic aromatic hydrocarbons (PAHs) in total suspended particulate (TSP) and particulate matter ten (PM 10) collected in non-heating seasons in urban areas of Urumchi and Zhengzhou, China were discussed on the base of carbon isotopic compositions of individual compounds.
结果表明 :这 2个城市的TSP与PM10 中多环芳烃单化合物稳定碳同位素组成相比较没有明显的区别 ;两城市的颗粒物样品中 ,分子量较小菲、蒽、荧蒽、芘和苯并 (e)芘的稳定碳同位素组成没有明显的区别 ,平均值范围为 - 2 3 4‰～ - 2 4 8‰ ,分子量较大的多环芳烃的δ13 C出现了明显差异 ,乌鲁木齐市环境空气颗粒物中多环芳烃单化合物的δ13 C随着其分子量的增大比郑州市更贫13 C ,乌鲁木齐市的环境空气颗粒物中的苯并 (a)芘、茚并 (1,2 ,3 cd)芘、苯并 (ghi)的δ13 C值分别为 - 2 8 3‰、- 31 8‰和 - 30 2‰ ,郑州市为 - 2 4 4‰、- 2 9 4‰和 - 2 6 3‰ 。
4) PM10 heavy air pollution
PM10重污染
1.
PM10 heavy air pollution events(API great than 3 grades) in Beijing area have been researched by analyzing air quality data and NCEP reanalysis data.
利用北京空气质量监测资料和NCEP再分析资料,分析了北京发生PM10重污染的天气形势。
2.
CART method has been used to study the meteorological factors resulting in the PM10 heavy air pollution of Beijing.
利用CART方法对造成北京PM10重污染的气象条件分析结果表明:适当的湿度条件和前期的污染状况是造成北京PM10重污染的必要条件,其他条件,如大气稳定度、边界层高度、持续性小风以及气压,是造成PM10重污染的重要条件。
6) PM_(10) and TSP
PM10与TSP
1.
Two R&P1400 Particulate Substance monitors at a position were used to determinat PM_(10) and TSP respectively.
通过在同一点位采用两台R&P1400颗粒物监测仪分别对PM10、TSP进行同步监测,对所获得354对数据分析后得出PM10与TSP比值,以更科学、合理地评价本地区空气质量。
补充资料：Pm和隐藏式pm7.62mm狙击步枪
Image:11557266295155940.jpg
pm和隐藏式pm7.62mm狙击步枪
中文名称: 英国pm和隐藏式pm7.62mm狙击步枪
研制国别: 英国
研制机构: 精密仪器制造公司
分类: e922.12
关键词: 枪械 步枪 陆军装备
简介
pm7.62mm狙击步枪是英国精密仪器制造公司为执行狙击任务而研制的步枪，其设计思想是：不管枪管清洁是与否，都要做到首发命中。
pm 7．62mm狙击步枪系统主要有步兵用、警用和隐藏式3种。步兵用pm狙击步枪已装备英国陆军，被命名为l96a1式，非洲、中东和远东一些国家的陆军也装备有此枪。
警用pm狙击步枪采用单发射击方式，可发射多种口径马格努姆枪弹。1000m距离内使用0．300in温彻斯特马格努姆和7mm雷明顿马格努姆枪弹，1000m以外距离使用8．6mm枪弹。
带消声装置的pm狙击步枪也在生产，这种枪发射特种亚音速弹，在300m射程内弹道较低伸、风偏不大的情况下，命中率较高。
隐藏式pm 7.62mm狙击步枪是pm狙击步枪系统的最新型，也是带消声装置的pm狙击步枪的可拆卸型，已投入批量生产。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。