查询词典 selectivity

When used in LAB complex unit with multi-step hydrogenation process,DSH-1 selective hydrogenation catalyst,which contain noble metal Pd,can transmit diolefin s to olefins effectively,and has good activation and selectivity.

DSH -1型含贵金属Pd双烯选择性加氢催化剂与多段加氢工艺结合，应用于脱氢法生产直链烷基苯的联合装置中，能有效地将脱氢过程产生的双烯烃转化成单烯烃，具有很好的反应活性和选择性，且操作弹性大，工艺过程简单。

The inventive has excellent activity of diolefin hydrogenation and selectivity, sulfur resistance and arsenic resistence, extremely excellent pyrolysis gasoline selective hydrogenation performance, can meet the process requirements of pyrolysis gasoline selective hydrogenation.

本发明的催化剂具有优异的双烯加氢活性和选择性，以及抗硫和抗砷能力，具有十分优异的裂解汽油选择性加氢性能，能够适应裂解汽油选择性加氢的工艺要求。

A mass of DMO in the transesterification course inhibited the disproportionation which has a small equilibrium constant. As a result, selectivity and yield of DPO were low.

酯交换反应中由于反应物DMO的大量存在阻碍了平衡常数较小的歧化反应的进行，使得DPO选择性和收率较低。

Vapor makes the activity and selectivity of the catalyst decrease a great deal yet this disvalue is reversible; When the elemental sulfur and vapor exist simultaneity in the system, it might generate H〓S and S on 〓 catalyst since the anti-Claus reaction, but this phenomena is not observed on CoS〓-TiO〓 catalyst showing that sulfides could check the anti-Claus reaction.

对硫化物催化剂CoS〓-TiO〓来说，助剂La和Ce的引入对CoS〓-TiO〓催化剂的氧化还原性能有一定影响，硫化物催化剂平均粒径要小，但助剂并未改变催化剂的电子结构，对于氨分解克劳斯反应的活性改变不大明显。

The delay time, generation time, specific growth rate, output and its constant are separately 8h, 0.87h, 0.79/h, 69183/h and 5322/. The hematite domesticator depresses the growth of the bacterium, but it can improve the selectivity to hematite.

驯化剂赤铁矿对草分枝杆菌的生长具有抑制作用，可使它的生长参数降低，但可明显提高它对赤铁矿的选择性捕收作用。

As a matter of fact, K promoter was used more frequently as a doper economically. 4. It was observed that K component appears to enhance the selectivity of C2+OH significantly with the lower catalytic activity simultaneously.

由于碱金属K对催化剂表面的电子修饰作用，K改性的CuZrO_2催化剂具有较高的高级醇选择性；同时，抑制副产物烃类的生成。

It is still the questions to be solved in the analysis of druggery to optimize the analytical conditions, improve the selectivity, reduce the detection limit and simplify the procedue.

优化反应条件，简化操作步骤，提高方法的选择性和降低测定的检出限，仍是光度分析需要解决的问题之一。

In this paper, a speckle reduction method for Synthetic Aperture Radar images based on Dual Tree Complex Wavelet Transform is proposed, for the DTCWT has approximate shift-invariant and good directional selectivity.

利用双树复数小波变换(Dud Tree Complex Wavelet Transform， DTCWT)的近似平移不变性和多方向选择性，提出了一种基于DTCWT变换的SAR图像嗓声抑制方法。

In electroanalysis, the advantage comes from the high selectivity of enzyme and the low detection potential of DET. In glucose biofuel cell application the DET of GOD in fabricating of electrode can work efficiently as anode in sugar/air battery.

葡萄糖氧化酵素的直接电子传导现象更可被利用在分析与能源方面，在分析上可以利用直接电子传导的低电位特性与酵素的专一性来进行侦测；在能源方面可以运用在生物葡萄糖燃料电池的阳极端来使用。

This method offers high selectivity, long life, no influence of surroundings gases, no electromagnetic induction and so on.

这种方法有很多优点，可以多选择性，长时间跟踪，并且对油箱内气体的没有影响，对变压器本身也没有电磁影响等。

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％。