1) PM10 concentration
PM10浓度
1.
The effect factors on the PM10 concentration in atmosphere were discussed in this article, including the intensity of pollution, weather conditions, and so on.
讨论了影响大气中可吸入颗粒物PM10浓度的因素,包括来源、源强、气象条件等,并分 析了其时空分布特征。
2.
Aim Taking the daily PM10 concentration observed values from 4 sampling spots in Baoji City,Shaanxi,China from Mar.
目的以宝鸡市2003年3月1日~2006年2月28日的4个监测点的逐日PM10浓度监测值以及宝鸡市同期的地面气象要素监测值为研究对象,进行宝鸡市PM10污染四季预报研究。
3.
The results showed PM10 concentration in heating period is considerably higher than in non-heating period.
利用邯郸市区4个代表站2006年逐时可吸入颗粒物PM10浓度监测资料和邯郸市观测站地面气象要素的逐时观测资料,分析了邯郸市主要空气污染物——PM10的时空分布特征,结果表明:PM10平均浓度采暖期明显大于非采暖期;日变化规律为上午浓度最高,夜间次之,下午浓度最低,采暖期为双峰双谷型,非采暖期为一峰一谷型;弱风、低温和潮湿的气象条件有利于可吸入颗粒物的积累,增加PM10浓度。
3) air PM10 concentration
空气PM10质量浓度
4) 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。
5) 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‰ 。
6) ρ(PM_(10))
ρ(PM10)
补充资料:Pm和隐藏式pm7.62mm狙击步枪
Image:11557266295155940.jpg
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。