查询词典 precipitation

Partial dissolution and re-precipitation of cementite during warm deformation were confirmed.

温变形过程中渗碳体溶解和在铁素体内再析出的事实得到证实。

In this study, the modified precipitation and recrystallization processes combined with a controlled calcination process for fabricating the ceria with large particle size and high appearance density was reported.

报导了一种与控制烧结大粒度，高表面比重的氧化铈的过程相结合的改性沉淀与再结晶过程。

The results show that there are little difference of CO sensitivity between precipitation transformation method and sol-gel method, the sensitivity of copper oxide loading on zirconium oxide or cerium oxide is better than that of loading on alumina or silicon dioxide, the optimal calcinations temperature is 500 Celsius degree and the optimal copper content loading on cerium oxide is twelve percent.

实验结果表明，材料的制备方法对气敏性质的影响不大；锆铈基氧化物的气敏性质较高，而Al2O3，SiO2作载体时效果要差一些；焙烧温度在500℃时对CO具有最好的灵敏度；当负载在氧化铈载体上的氧化铜含量为12%时，对CO的气敏性质最高。

The advantage of supercritical carbon dioxide used as an environmental medium in polymerization and reactions in supercritical carbon dioxide are described. It includes homogeneous free radical polymerizations, precipitation free radical polymerizations, dispersion free radical polymerizations, emulsion and inverse emulsion free radical polymerizations, cationic polymerizations, ring-opening polymerization, melt-phase condensation polymerizations, sol-gel polymerizations, polymer blend synthesis, catalytic chain transfer polymerizations, oxidative coupling polymerization, nitroxide-mediated radical dispersion, atom-transfer radical polymerization, reversible addition-fragmentation chain transfer polymerization, electrochemical polymerization, simultaneous one-pot combination of enzymatic and chemical polymerization, copolymerization of carbon dioxide used as monomer.

评述了ScCO2作为聚合反应介质的优点，以及在ScCO2中可进行的聚合反应类型，包括均相聚合、沉淀聚合、分散聚合、乳液及反相乳液聚合、阳离子聚合、开环聚合、熔融态缩聚、溶液-凝胶聚合、聚合物混合合成、链催化转移聚合、氧化-偶合反应聚合、氮氧自由基可控活性聚合、原子转移自由基聚合、可逆加成-断裂链转移、电化学聚合、原子转移聚合与酶催化开环聚合两种活性聚合在ScCO2中同时聚合、二氧化碳作为原料共聚合等。

The precursors of Mo-Cu composite powders were prepared by chemical co-precipitation using ammonium molybdenum and chalcanthite.

以钼酸铵和五水硫酸铜为原料，用化学共沉淀法制备钼铜复合粉前驱体。

From these data, the desertification has developed based on the fluctuating humidity before 1980s and reverse after 1980s in study area. The results from analysis on climate and land use change in late 50 years show that changefully precipitation is the main natural background that...

对研究区近50a来的气候及土地利用方式变化的分析表明，气候因素中降水的多变性是研究区土地沙漠化发生的自然背景，而滞后于气候变化的土地利用方式改变则是研究区沙漠化最主要的成因。

Chelation treatment of complex copper precipitation wastewater, high magnetic field on the adsorption of bacteria bearing Wastewater ...

螯 合沉淀法处理含络合铜废水，磁场对高效吸附菌处理含铜废水的影响。。。

The illite and chlorite are forming by dissolve, transportation, and precipitation.

伊利石和绿泥石的沉淀机制为溶解、迁移和沉淀。

The sensitivity test showed that the remnant chlorite was impossible to form Fe3 precipitation in the simulative system.

对酸敏残液分析结果表明，在一定时间内不可能形成Fe3沉淀及堵塞喉道。

The cross-wavelet transform method is adopted to study the multi-time scale correlations between the winter temperature, the summer precipitation in Northwest China and the Arctic Oscillation Index over the same period, in order to investigate the relationships between climate change in Northwest China, the AOI, and the Eurasian zonal circulation index in recent 56 years.

运用交叉小波方法分析了近56 a来我国西北地区气候变化与北极涛动指数、欧亚纬向环流指数之间的联系，讨论了西北地区冬季气温和夏季降水变化与同期AOI之间的多时间尺度相关。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。