查询词典 aldehyde hydrate

It was designed to study the kinetics of hydrate formation and flow characteristics of hydrate slurries under pressure.

可用于考察压力、温度、液体流量和流体组成对水合物生成规律的影响，及水合物浆液流体力学性质的研究。

It was designed to study the kinetics of hydrate formation and flow characteristics of hydrate slurries under pressure max.

可用于考察压力、温度、液体流量和流体组成对水合物生成规律的影响，并研究水合物浆液的流体动力学性质。

The thermodynamic calculation results indicated that the formation of calcium aluminate hydrate from aluminate solution with CaO is easier than that with Ca2, and the value of αk is great at low temperature; the temperature rise leads to the reduction of stability of calcium aluminate hydrate in the aluminate solution, and it can be decomposed at high temperature, which can both substitute for Ca2 and recover alumina in the process of Bayer.

热力学计算结果表明，氧化钙较氢氧化钙更容易使铝酸钠溶液中的铝酸根离子转化为水合铝酸钙，使铝酸钠溶液的平衡苛性比能达到很高的值；水合铝酸钙随着温度的升高，稳定性降低，因而能在拜尔法高温溶出过程中分解以代替石灰，并回收其中的氧化铝。

Natural gas hydrate formation has dualism: on the one hand,natural gas hydrate will result in blocking flowlines and process equipment during gas production and gathering and transportation,which will directly effect normal production of oil and gas and bring about serious safe problems.

天然气水合物的生成具有双重性，一方面在天然气开采和集输过程中，水合物的生成会造成集输管线和生产设备堵塞，不仅直接影响油气工业的正常生产还会带来严重的安全问题；另一方面，基于天然气水合物的各种应用技术又具有诱人的工业应用前景。

Some experiments have been done by simulating in-situ hydrate formation system by gas migrating in seepage system in a glass bubble cell.The phenomena in experiments indicate that gas migration can change the quality of mass and heat transfer of the interface between gas and liguid when hydrate is forming,and it's a moving process of equilibrium curve.There wil...

在鼓泡透明玻璃反应釜里模拟渗漏系统气体穿越多孔隙砂层形成水合物的过程实验，分析了气体迁移对气体水合物形成时气液界面的传质传热性质影响，表明实验中气体迁移形成水合物的过程是一种相平衡曲线动态移动的过程；在形成水合物的气—液界面存在具有一定厚度的过渡层，只要过渡层内气体达到饱和即可形成水合物；气体在迁移中不断形成水合物并在孔隙中形成过压，导致地层骨架的力学破裂和失稳；必须建立一个新的水合物相图以适应气体迁移形成水合物过程的这种新特性。

The free gas zone beneath the hydrate layer is an important part of methane gas hydrate resources with a big potential of recovery and exploitation.

天然气水合物下伏游离气是水合物系统天然气资源的重要组成部分，具有巨大的开发利用价值。

Through modifying proportions of potassium nitrate, sulfur, phenolophthalein and potassium hydrate, formula of charcoal-free black powder is optimized by replacing charcoal with reactant of phenolphthalein and potassium hydrate.

以酚酞和氢氧化钾的反应物替代木炭，通过调整硝酸钾、硫磺、酚酞及氢氧化钾的混合比例对无木炭黑火药配方进行优化设计，对比研究了普通黑火药与无木炭黑火药在机械感度、静电火花感度、热分解过程及输出特性等方面的差异。

In order to extend use of calcium carbonate, the samples were modified by hydrazine hydrate, triethanolamine and sodium stearate. Hydrazine hydrate was 0.08%～0.24% of calcium oxide, triethanolamine was 0.1%～0.3% of calcium oxide, sodium stearate was 5% of calcium carbonate,modification time was 40 minute. Calcium carbonate has better active exponent and white degree.

为进一步扩大纳米碳酸钙的应用范围，对纳米碳酸钙进行了增白活化的改性，改性剂水合肼、三乙醇胺的用量分别取CaO质量的0.08%～0.24%、0.1%～0.3%，硬脂酸钠的用量取CaCO3质量的5%，改性时间为40min，在此条件下可以制得高白度、高活性的碳酸钙样品。

" Adding water to lime yields calcium hydroxide (slaked lime, calcium hydrate , hydrate d lime, or caustic lime), which is used in mortar, plasters, cements, whitewash, hide dehairing, and water softening and purification and as a source of other calcium salts."

往石灰中加水会产生氢氧化钙(熟石灰、水合钙、水合石灰或苛性石灰)，在灰浆、熟石膏、水泥、白涂料、毛皮去皮、氨的回收、水的软化、糖的精炼、石化工业、家禽饲料和食品中都有用途。

A safe region,which is defined according the critical hydrate volume concentrations,is firstly proposed for hydrate slurry,and it can be used to judge if the pipeline can be run safely or not.

通过与其他研究的比较，以临界水合物体积浓度为判断标准定义了一个流动安全区，当管道中的水合物体积浓度小于临界值，可以认为是安全的，相反则认为管道存在水合物堵塞的威胁。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。