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The temperature and density and direction of air masses can be determined, and thus the weatherman has historically offered predictions, but these predictions have become increasingly difficult, in part because of the Earth wobble which jerks the Earth about dunder her mantel of air, often at cross currents to the jet stream.

气团的温度、密度以及移动方向可以被确定,因此气象人员可以依据历史数据进行预测。但现在这样的预测越来越困难了,部分原因是地球晃动造成空气运行趔趄,风速带被横向交叉气流所干扰。

The headspace gas chromatography was used to determin the ethanal content in the production process of bottle grade PET chip.

论述了瓶级聚酯切片生产过程中,采用顶空气相色谱法测试切片中乙醛含量的称样量、样品处理、颗粒度、顶空热平衡时间、热平衡温度、标定及其他顶空测量参数的优化。

Is a mid-June afternoon, the temperature was also 30 degrees, however, air drying has some hot wire, but can stand to sit, only the sweat from his forehead as well as from the physical activity in the exudative to the skin.

已经是六月中旬的一个午后,温度还不过30度,空气中有些干燥有丝闷热,但是还能坐得住,只是有细密的汗珠从额头从身体上活动的肌肤中渗出来。

The oxidant 〓 plays indirect role in dissolving gold, and mainly controls the mix potential of Au in the alkaline thiourea solution. In which the "mix potential"is the decisive factor affecting the dissolution of gold. The reaction driving force is enough to have formamidine disulfide oxidize Au to Au〓 at the potential of about 0.4V. And then thiourea molecular complexes with Au〓 ion soon, which causes the fast dissolution of gold in the alkaline thiourea media. The dissolved weight of gold in 0.25 M thiourea solution with 0.05M Na〓SO〓 and 0.1M 〓 of pH 12. 5 by air at the temperature of 303K is 7. 8mg·cm〓 within 1hr.

在碱性硫脲溶金过程不起直接作用,而是通过S〓O〓来控制二硫甲脒有效形成的金在溶液中的混合电位;&混合电位&是影响碱性硫脲溶液溶金与否的决定性因素,在0.4V左右,有足够的推动力致使二硫甲脒氧化Au成Au〓,随后硫脲与Au〓络合形成稳定的络离子Au〓,从而使金快速溶解;温度为303K、pH为12.5时,在含0.05MNa〓SO〓、0.1M 〓及0.25M硫脲的溶液中,鼓入空气,金的溶解量在1hr内为7.8mg·cm〓;铜只有微量溶解,银、镍、铁则几乎不溶解。

Based on the heat and moisture transfer through porous media, a 1-D transient hygrothermal model for multilayer wall were established by using air humidity ratio and temperature as driving potentials.

以多孔介质传热传质学为基础,以墙体内的空气含湿率和温度为驱动势建立了多层墙体中的一维瞬态热湿耦合传递方程。

In this paper, the characteristics of catalytic reforming reaction, coke deposition on Ni katalyst and three-dimension flow in the micro combustor premixed chamber were simulated.

因微型燃烧器内微尺度燃烧易熄火、燃烧效率不高,存在催化重整过程中的积碳、微尺度等问题,可利用甲烷和湿空气中水蒸汽预混催化重整产氢来强化燃烧,对预混腔内催化重整、积碳及流动特性进行模拟,探讨了微型预混腔中甲烷、水蒸汽重整过程中水碳比、质量流量和催化壁面温度对催化重整、积碳、流动等的影响。

Based on the analysis of kinetical process of CH4 -air oxidation, a numerical modeling of the species concentrations and temperature for CH4 jet diffusion combustion is made using a four-step reduced mechanism and two semi-detailed chemical kinetical reaction mechanismsW mechanism and Y mechansim.

在分析甲烷-空气氧化反应动力学过程的基础上,采用四步简化机理和两种半详细的化学反应动力学机理-W机理和Y机理,对甲烷射流扩散燃烧的组分浓度和温度进行了数值模拟,计算结果与实验结果进行了对比分析。

Around the water, soil, food, air, temperature, humidity is different, and gastrointestinal Lawton not meet the road caused by decreased gastrointestinal function, coupled with the not suited to food and drink, so upon their arrival in a new place easily acclimatized.

各地的水、土、粮食、空气、温度、湿度都不一样,旅途劳顿和胃肠不适应引起的胃肠功能下降,再加上饮食上的不适应,所以刚到一个新的地方容易发生水土不服。

Effect of frost growth on the performance of louvered finned tube heat exchangers.

图6为被试热泵机组在进风温度为0℃、不同进风相对湿度工况条件下的制热量及COP动态实验结果,从中可以看出结霜对空气源热泵性能的影响。

In previous researches, the numerical simulations were mainly focused on the convective heat transfer in the fluid zone of the louvered fin geometry. Virtually, the heat conduction in the fins and the convective heat transfer of air are coupled each other.

国外有学者对百叶窗翅片内的流场和温度场进行了数值模拟,事实上,在百叶窗翅片上的传热过程中,翅片的导热和空气的对流换热是相互耦合的,而这在以前的研究中忽略了。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。