查询词典 air mass

Siemens supplied infrastructure that brings rapid mass transit, cleaner air and water for Shanghai.

例如，西门子提供的基础设施将为上海带来更便捷的交通以及更清洁的空气和水源。

In the heat and mass transfer process between liquid desiccant and air, the flow rate and heat inject/exhaust are both important factors to approach a reversible process.

吸湿性溶液与空气的热质交换过程既有热量的交换又有质量的交换，提高该过程的可逆程度是提高溶液除湿空调系统性能的重要手段。

Treating performance study of 17 commonly using hardwood species was conducted in wood preservation,the results indicated that,there was a linear relation between the air-dry density of sapwood and its mass retention .

对17种常用速生阔叶材及1种针叶材进行了可防腐处理性的试验研究，结果表明：阔叶材边材的质量载药量与它的密度呈极显著的线性关系。

The house rose in mass, faced toward the old couple eagerly, filled the air with a snow-storm of waving handkerchiefs, and delivered the cheers with all its affectionate heart.

全场起立，热情洋溢地面对着这对老夫妻，各个角落挥动的手绢，就像漫天飞舞的雪花，大家发出了充满爱心的欢呼声。

Through lots of tests, the new technology of preparing the polymeric ferric aluminum silicate sulfate by using the waste-acid of Ti02-industriy and the coal fly ash has been designed. The highest Al-acid stripping rate can be achieved by the waste sulfate acid under boiling degree for 1. 5h when the mass ratio between NaCl and Coal Fly ash is 0. 05:1, as well as that between Coal Fly ash and Waste Acid ratio is 1:10. By means of the oxidation-polymerized reaction under 40-50*C and normal pressure, using NaNCkas catalyst and air as oxidation, the polymeric ferric aluminum sulfate can be obtained. The poly-silicic acid is polymerized with soluble glass in the optimum conditions of pH=5-6 and the concentration of Si02 is about 3%. The inorganic high molecule coagulant of PFASS is synthesized with the poly-silicic acid into the solution of polymeric ferric aluminum sulfate.

本论文通过大量的试验，研究开发出了用粉煤灰及钛白废酸制取聚合硫酸硅酸铁铝的新工艺，其最佳工艺条件为：于沸点温度，以NaCl为助溶剂(NaCl与粉煤灰质量比为0.05：1)，以钛白废酸浸取粉煤灰(固液比为1：10)中的铝1.5小时，最大浸取率可达40％；经过滤洗涤后，调节滤液pH至2.0左右，以NANO_2为催化剂(NaNO_2用量为滤液中FeSO_4·7H_2O量的3％)，空气为氧化剂，于40-50℃进行常压催化氧化反应，制取聚合硫酸铁铝，催化氧化时间为2小时；将工业水玻璃稀释至3％左右，调节其pH于5-6，室温下制备活性聚硅酸；将活性聚硅酸与聚合硫酸铁铝按照一定比例复合，经熟化，即制得新型无机高分子混凝剂PFASS。

A measuring approach of pressure oscillation has been developed and experiments are conducted in a 10 liter two-dimension air-lift loop reactor. The experimental results show that the local mass transfer parameters have close relationship with the operating conditions, the structure of ALR and the properties of the reaction systems. A series of measurements of pressure pulse indicate that a gas distribution zone exists near the gas sparger, and in this zone the responding signals of pressure pulse are different with the signals measured in other parts of the reactor.

对不同结构的环流反应器的局部流体动力学和传质动力学特性进行了研究，利用压力传感器测量了空气-水、空气-NaCl水溶液、空气-Na〓SO〓水溶液、空气-葡萄糖水溶液和空气-乙醇水溶液五种体系，在不同气速下，不同位置的压力脉动信号，通过随机信号的数学分析，得到压力脉动信号的频谱特性，并依据压力脉动信号的频谱特性的分析给出环流反应器气体分布区的范围。

Methods Fresh litchi peel was air-dried, extracted with 70% ethanol solvent in ultrasonic wave. The extract was then purified with D101 macroporous resin adsorption chromatography, C18 solid phase extraction and high performance liquid chromatography. And the component purified was identified by mass spectrography.

新鲜荔枝果皮阴干，用70％乙醇溶液以超声波浸提法提取，提取液经过D101大孔树脂吸附层析、C18小柱固相萃取、高效液相色谱法分离、纯化后，采用质谱法鉴定结构。

Based on the heat and moisture transfer theory, establishes the quasi three-dimensional and simplified model of heat and mass transfer between air, tailrace water and surface of tailrace tunnel using the lumped parameter model.

在水－空气热湿交换理论的基础上，采用集总参数法建立了无压尾水洞引风过程空气与尾水及洞壁面之间进行热湿交换的准三维数值模型及其简化模型。

Mass per unit of volume in powder form, including the air trapped between the particles.

每单位体积粉末的质量，包括粒子之间的空气。

When it passed over the surface of TiO2-Y2O3 with the mass ratio of 3∶1, methanol gas was catalytically oxidized by O2 in air that resulted in intensive chemiluminescence. A novel methanol gas sensor based on this kind of CL was developed.

发现当甲醇气体通过TiO2-Y2O3 (质量比为3∶1)粉体表面时，可被空气中的O2催化氧化产生强烈的化学发光，基于此研制了一种新型的甲醇气体传感器。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。