| 1. | Mineralogical analysis for the atmospheric dust samples 大气粉尘样品的矿物分析方法初探 |
| 2. | Methods of dust character test - part 1 : dust sampling 粉尘物性试验方法第1部分:试验尘样的采集 |
| 3. | Chemical analysis of dust sampled from air - conditioner sieve of exhibition hall in henan museum 河南博物院展室空调滤网吸附灰尘的分析 |
| 4. | Standard practice for collection of settled dust samples using wipe sampling methods for subsequent lead determination 连续铅含量测定的擦拭取样法用积尘样品收集的标准实施规范 |
| 5. | Standard practice for collection of settled dust samples using wipe sampling methods for subsequent determination of metals 金属连续测定用擦拭取样法选定的沉降粉尘样品的收集用标准实施规程 |
| 6. | Stardust ' s cometary and interstellar dust samples will help provide answers to fundamental questions about the origins of the solar system 星团的采样的彗星和星际尘埃样本将有助于回答关于太阳系起源的一些基本问题。 |
| 7. | Abstract : according to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol , tsp and its particle size distribution , micrometeorology , and the solar spectroscopic radiation , even the neutron activation treatment of sand dust samples in helan mountainous area , the formation law of sandstrom , dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of helan mountain are counted and analysed 文摘:利用贺兰山地区沙尘暴历史资料和综合观测资料,对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒( tsp )及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理,分析了该地区浮尘、扬沙和沙尘暴形成规律,气候变化特征和贺兰山的影响。 |
| 8. | 2 . by analyzing , the reason of the low efficiency of collecting dust sample by using sand collector is the dissatisfaction of the equal dynamic function . therefore , the following two aspects are studied : ( 1 ) analyzed how it affects toward the principle of the equal dynamic with the change of the air vent area of the sand collector 分析目前使用集沙仪存在的问题是集沙效率低,其主要原因是不满足等动力性,为此进行了以下两方面研究: ( 1 )研究了集沙仪排气口大小对等动力性的影响,结果表明影响显著。 |
| 9. | According to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol , tsp and its particle size distribution , micrometeorology , and the solar spectroscopic radiation , even the neutron activation treatment of sand dust samples in helan mountainous area , the formation law of sandstrom , dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of helan mountain are counted and analysed 利用贺兰山地区沙尘暴历史资料和综合观测资料,对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒( tsp )及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理,分析了该地区浮尘、扬沙和沙尘暴形成规律,气候变化特征和贺兰山的影响。 |