查询词典 catalysis

Accordingly, the self-catalysis effect of martensitic transformation is weaked in nanosized crystals.

由此得出：在纳米晶体中马氏体相变的自促发效应比传统粗晶明显地减弱。

But ferrate has the property of self-catalysis, unlike the stability of chlorine, which contributes to its low stability in solution and prohibits its wide use.

但是，高铁酸盐有自催化现象，具有不稳定性，不能够象液氯一样长期保存，这大大限制了它的大规模应用。

It is also shown that it is quite possible to extract gold by self-catalysis leaching of thiosulfate from copper-containing ore or concentrate without the addition of copper ions.

在铁粉置换、锌粉置换、活性炭吸附等几种方法中，铁粉置换法从硫代硫酸盐的浸出液中回收金最理想，金、银置换率大于99％，而铜置换率小于20％，置换的最佳pH范围为10～10.5。

Two new technologies, at ambient temperature leaching and by self-catalysis leaching with thiosulfate, have been developped for gold extraction from copper-containing concentrate.

对氰化易溶铜较高的金精矿详细研究了硫代硫酸盐常温常压浸金和自催化浸金新工艺及浸出液中金的回收。

Pitting corrosion developed continuously by means of self-catalysis owing to the existing of passive-active cell in pitting corrosion hole. The Al2Cu phase was found on the grain boundary, and a poor Cu element area was observed nearby grain boundary.

在蚀孔内形成了钝化-活化原电池，使点蚀以自催化的方式不断发展。L401合金中α-Al相在吴占军西安理工大学硕士论文晶界析出A12Cu，在晶界附近产生贫铜区。

In this thesis, narrow polydispersity glycidyl methacrylate based di- and tri-block copolymers, with self-catalysis and self-initiation behaviors by incorporation of 2- ethyl methacrylate blocks, were synthesized via ambient temperature atom transfer radical polymerization.

本课题通过引入甲基丙烯酸(2-N， N-二乙胺基)乙酯嵌段，采用室温原子转移自由基聚合，合成出分子量分布窄的具有自催化和自引发行为的甲基丙烯酸缩水甘油酯基二嵌段和三嵌段共聚物。

Keywords near-critical water;self-catalysis;iminodiacetonitrile;iminodiacetic acid;hydrolysis

近临界水；自催化；亚氨基二乙腈；亚氨基二乙酸；水解

Macroscopic instability phenomena of NiTi shape memory alloy are reported during stress-induced martensitic phase transition.The research was focused on the evolution of Lüders-like band due to microscopic phase transition in grains percolating up to macroscopic level by self-catalysis.

介绍镍钛形状记忆合金发生应力诱发马氏体相变时的宏观失稳现象，研究微观晶粒内相变因自催化效应逾渗到宏观水平所表现的类Lüders变形带演化，同步测量应力-应变响应、表面形貌和表面温度，跟踪了不同热-机械复合加载条件下构件力学行为的变化。

The hexagonal-platelet Zr-Ce-SBA-15 materials were superior to the conventional SBA-15 of rod or fiber morphology in facilitating molecular diffusion when they were used in the adsorption, separation and catalysis processes.

与常规SBA-15相比，这种短孔道、大径轴比的六方板状介孔材料在吸附、分离及催化等领域中能更有效地促进分子的扩散传递。

The invention adopts halogen acetylized crosslinked polystyrene resin and hydroxybenzyl alcohol as the raw material, and the solid phase synthesis carrier with hydroxymethyl as the active group is synthesized through the joint catalysis of N, N-dimethyl formamide used as the reaction solvent, inorganic base and phase-transfer catalyst.

本发明采用卤乙酰化交联聚苯乙烯树脂和对羟基苯甲醇为原料，在以N，N-二甲基甲酰胺为反应溶剂、无机碱及相转移催化剂的共同催化下合成了一种以羟甲基为活性基团的固相合成载体。

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％。