The results indicated that the district is much polluted by TSP and floating dust in the spring;the daily variation of TSP mass concentration presents a curve of two peaks;the percentage of fine particles in the floating dust is high;and meteorological conditions and regularity of human activities have great effe.
通过对兰州市城关区 2 0 0 0年春季大气气溶胶的监测 ,分析了该地区总悬浮颗粒物 (TSP)的质量浓度及飘尘的粒径分布规律。
The results indicate that the air of the district is contaminated seriously by the total suspended particles(TSP) and the floating dust.
经过分析和比较表明，该地区总悬浮颗粒物（ＴＳＰ）和飘尘对大气的污染相当严重，飘尘占ＴＳＰ的比例偏大，飘尘的颗粒分布在冬季和春季相似。
Analysis of Organic Pollutants in Dust by Supercritical Fluid Extraction;
超临界流体萃取对大气飘尘中有机污染物的分析
The method to determine the real specific gravity of atmospheric dust by using laser slitdiffraction technology has high precision and is easy to handle.
利用激光单缝衍射技术测量大气飘尘的真比重，具有精度高和测试方法简便易行的特点。
By optimizing extracting method,heating procedure,chromatographic temperature,19 polycyclic aromatic hydrocarbons in airborne particulate are detected by gas chromatography/mass spectrometry(GC/MS) with quickness and good sensitiveness.
通过提取方法、升温程序、色谱分离温度、载气流速等的优化,气/质(GC/MS)联用测定大气飘尘所含19种多环芳烃,快速、灵敏,检测限可达到0。
In this work, samples of airborne particulates,vent gas and smog dust during heating and non-heating seasons were collected in the urban and suburban areas of Lanzhou.
本文收集了兰州市区和郊区在取暖期和非取暖期的大气飘尘样品和汽车尾气及烟尘样品。
A rapid and effective method for detecting benzo(a) pyrene in airborne particulates was developed, in which benzo (a) pyrene was extracted in an one minute step with concentrated sulfuric acid from a cyclohexane extracted solution from the airborne particulates, and then determined with a synchronous fluorescent speetrometry.
提出用浓Ｈ２ＳＯ４从大气飘尘样品的环己烧提取液中一次萃取后，用同步荧光光谱测定苯并（ａ）芘的方法。
Determination of Polycyclic Aromatic Hydrocarbons in Airborne Particulate by Gas Chromatography/Mass Spectrometry;
气/质联用测定大气飘尘之多环芳烃
Air quality--Determination of benzo(a) pyrene in flying bust--Acetylated paper chromatography fluorescence spectrophotometric method
GB/T8971-1988空气质量飘尘中苯并(a)芘的测定乙酰化滤纸层析荧光分光光度法
This paper uses this method to measurethe real specific gravity of atmospheric dust sample, and there are satisfied results to prove the method isfeasible.
本文采用此法测量了飘尘样品的真比重，以满意的结果证明了该法的可行性。
The method to determine the real specific gravity of atmospheric dust by using laser slitdiffraction technology has high precision and is easy to handle.
利用激光单缝衍射技术测量大气飘尘的真比重，具有精度高和测试方法简便易行的特点。
A simple, rapid method for the determination of Pb, Zn, Cu in airborne particulatesby AAS after ultrasonic extraction was described.
本文介绍超声波萃取一原子吸收光谱简易、快速测定大气飘尘中铅、锌和铜的方法。
Particles of dust floated in the air.
尘埃在空气中飘动。
After the explosion dust was suspended in the air.
爆炸後灰尘飘浮於空中。
Darkness settled over the fields. Dust settled in the road.
黑暗笼罩田野。灰尘飘落在路上
Low Recital and Soft Song Scattering in the Dust in the Wind--HOU Xiaoxian and his "Dust in the Wind;
飘散在恋恋风尘中的浅吟低唱——侯孝贤和他的《恋恋风尘》
fine solid particles of ash that are carried into the air when fuel is combusted.
燃料燃烧后飘入空气中的细小固体尘粒。
You are hiding behind the music, conversing with the voices floating in the niches and then, slowly dissolve into the sky.
你躲在音乐背后，和那些飘荡在角落的声音对话，最后化为一股尘土飘散于天空。
Of this world's dust, -- their lutes did silent grow,
可是幻想的轻飘的紫袍，免不了／沾上人世的尘土，那琴声终于逐渐
On two sides of the store, the doors had to be wide open to the road and parking lot. Every time a car drove by or pulled into the parking lot, dust would swirl and settle in the store.
而店的两边有许多停车位，每当一辆车开过或驶进车位，灰尘就漫天扬起飘人店内。
Two previous missions, Ulysses and Galileo, had already detected the flow of dust particles into the solar system.
先前的两个任务，尤利西斯和伽利略，已经探测到飘进太阳系的尘埃流。
As, when the wind blows, small particles of dust fly in the air, so, according to one's particular karma, one suffers or enjoys material life.
如同大风刮起，尘土也随风飘起，所以人按照自己的业报，在物质生活中享受或受苦。
She received him in a little parlor: a small unspeckled bower, ornamented with a desultory foliage of tissuepaper.
她在一间小小的客厅里接待他。小小的房间一尘不染，室内装饰着用皱纸做成的飘逸的枝叶。
The act of fluttering or waving.
飘荡飘动或舞动的动作
an airy silk gauze
轻飘飘的丝质薄纱.