查询词典 fractionation

A mathematical model of the semibatch foam fractionation of surfactants was developed. Foam bed is assumed to consist of equal dodecahedral bubbles at any cross section.

本文建立了间歇式泡沫分离水中表面活性剂的模型，假设所有气泡均为正十二面体，在塔的每一截面上，泡沫半径均一。

A mathematic model of foam fractionation was set up based on the following assumptions: adsorption equilibrium,same bubble size and regular dodecahedron model of real bubbles.

假设吸附过程始终处于平衡态、气泡大小均一以及每一个气泡均为正十二面体，构建了泡沫分离过程的数学模型。

The results are showed as follows:(1) The distribution and fractionation of the DREE in the small basin water in southern Jiangxi province reflect the character of the the weathering source, while the reports of main rivers in the world are probably the the result of mixing and uniforming of many distributaries.

获得以下几点认识：(1)赣南小流域水体中DREE的分布分异特征，主要反映了源区的风化特征。可以推测目前已报道的一些大的河流中DREE的分布分异特征则是河流混合过程中均一化的结果。

In Branch C area, the heavy REE enriched shale normalized patterns of DREE, resemble a characteristic of REE in the weathering profiles, meanwhile, the fractionation of REE during the weathering process and the complexation of the REE with organic matters, also contribute to the patterns.

3支流C区溶解态稀土元素的页岩标准化分布模式为重稀土富集型，主要继承了风化壳中稀土元素的分布特征，同时风化过程中轻重稀土元素之间的分异、水体中稀土元素与草酸形成的有机络合也起到一定的作用。

This text aims at the upper reaches of Ganjiang River in the southern Jiangxi Province as the research object, analyzes the distribution and fractionation of dissolved Rare Earth Element in the water, and discusses the origins of the water DREE signatures.

其中利用VG Axiom高分辨多接受双聚焦等离子体质谱仪测定了水体中溶解态稀土元素的含量，文中按照水体化学特征的差异性将采样区划分为四个次一级的区域(支流A区、支流B区、支流C区和干流D区)，并分别讨论了各区中稀土元素的地球化学特征。

ReduceMain fractionation tower,s press drop can enhance inlet pressure of compressor.At the condition of compress ratio is invariable,it can improve system pressure、increase NTS of stabilization tower、reduce stabilize gasoline C4 ratio、improve system absorbent ability.Generic design can hardly reach the best NTS of absorber,so adding absorber,NTS can obviously increase effect so absorb. Because adding absorber'NTS can reduce system dependence on other factors,and it can not lead to the increase of the energy,so it is the best economic method of improving absorb operation effect. For desorber,double feed stream is a economical means but it need adding the NTS.

降低主分馏塔的压降，可以提高压缩机的入口压力，在压缩比不变的情况下提高系统压力；增加稳定塔理论板数，可以降低稳定汽油中C4的含量，系统的吸收效果改善；一般的设计和吸收塔的最佳板数相距较大，所以改造吸收塔的理论板数，它对提高吸收效果往往最显著，又因为改善吸收塔的理论板数会降低系统对其它因素的依赖程度，而且改善它并不增加能耗，所以改造它对提高吸收效果又是最经济的手段之一；对于解吸塔来说，双股进料的工艺很有经济效益，但它需要增加理论板数来实现。

The toxic compound was traced by lettuce germination test guided fractionation and HPLC purification, and was identified as 3β-formyl usolic acid on the basis of 1H and 13C NMR experiments. It is the first time to find this compound from the order of Myrtaceae

用高效液相色谱对桉树凋落叶中毒性物质进行分离、纯化，以小麦、绿豆、大速生菜为指示植物，对分离到的物质进行毒性跟踪，分离到一个毒性较强的组分，经1H氢谱和NMR鉴定为3–β甲酰基–乌索酸。

The chemical and structural propert ies of the humic acids before and after fractionation were characterized by elem ental analyzer, Fourier transform infrared spectrometry, solid state 1 3C-nuclear magnetic resonance spectrometry (13C-NMR) and pyrolysis-gas chr omatography-mass spectrometry.

利用切面流超滤技术将Pahokee泥炭腐殖酸分为相对分子质量不同的8个级分，并综合应用元素分析和傅立叶变换红外光谱、固体13C核磁共振(13C NMR)和裂解-气相色谱-质谱技术详细研究了分级前后腐殖酸分子的结构组成特征。

Objective To fractionate phosphoproteome of mouse liver by two-dimensional (2D) liquid phase chromatography fractionation.

目的利用二维液相色谱法分离小鼠肝脏磷酸化蛋白质组。

Objective To fractionate phosphoproteome of mouse liver by two-dimensional 2 liquid phase chromatography fractionation .

目的利用二维液相色谱法分离小鼠肝脏磷酸化蛋白质组。

Sodium citrate; calcium carbonate; calcium hydroxide; potassium bicorbonate; magnesium carbonate; ferrous sulphate; Zinc sulphate; copper sulphate; manganese sulphate; potassium iodide; sodium selenite.

柠檬酸钠；碳酸钙；氢氧化钙；碳酸氢钾；碳酸镁；硫酸亚铁；硫酸锌；硫酸铜；硫酸锰；碘化钾；亚硒酸钠。

All this to say that I'm glad filmmaking hasn't become completely ironic. I can enjoy an ironic film as much as the next person, but they usually involve a message of some sort. One that's delivered in a smirkingly clever way that requires little in the way of talent.

所有这些都是说，我很高兴电影制作没有变成完全讽刺艺术，我可以和下一个人一样享受讽刺电影的乐趣，虽然他们经常会被划归到一定级别，技术方面不需要很高的才能。