查询词典 ether

Secondly, the syntheses of functionalized macrocyclic polyamine complexes containing nucleobases, PNA monomer, imidazolium side, crown ether, ferrocenyl side and their interaction with DNA were studies, respectively.

在功能化大环多胺方面，我们合成了含有碱基、PNA单体、咪唑鎓盐、冠醚、二茂铁等功能化基团的大环多胺衍生物及金属配合物，并研究了其与DNA的相互作用。

The estraction of trace copper by crown ether and KI system was studied.

本文用二苯并2 4 王冠8，KI体系配合萃取分离痕量铜，用原子吸收光谱法测定铜，萃取结果令人满意。

It was shown that the fluorescence spectra of fluorescein in the gels had a red shift in contrast to those in the solution of diphenyl ether and that the gelation thime decreased with increasing the concentration of BMDM.

研究结果发现，与荧光素在二苯醚溶液中的荧光光谱相比，在凝胶中出现了 10～25nm的红移；而且发现分子凝胶的凝胶化时间随着BMDM浓度的增加而减小。

The synthetic technique of anionic surfactant sodium dodecyl diphenyl ether disulfonate was studied.The best reaction conditions were determined.Alkylation was carried out with n∶ n=5∶1 at 70 ℃ for 5 h to attain 82% yield.

研究了十二烷基二苯醚二磺酸钠阴离子表面活性剂的合成工艺，得出烷基化的最佳反应条件为：催化剂用量为n∶n =5∶1；反应时间 5h ；反应温度 70℃；二苯醚的转化率 82 %。

A study has been made on Synthesis of poly with diphenyl ether and terephthaloyl chloride as reactants, 1,2 dichloroethane as solvent, and aluminum chloride as catalyst.

研究了以1，2－二氯乙烷为溶剂，以无水三氯化铝／DMF为复合催化剂体系，在温和条件下，以二苯醚和对苯二甲酰氯为原料合成高分子量聚醚酮酮的方法。

RoHS Directive stipulates that from July 1, 2006, All member states should invest in the market to ensure that the restrictions on the use of electronic and electrical equipment, lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether and polybrominated biphenyls and other hazardous substances.

RoHS 指令规定，从2006年7月1日起，各成员国应确保在投放于市场的电子和电气设备中限制使用铅、汞、镉、六价铬、多溴二苯醚和多溴联苯等有害物质。

A water molecular gel can be formed by the aggregation and self-assembly of gelator 4,4′-bisstearylamide diphenyl ether at very low concentration.

合成了一种新型凝胶因子，能在很低的浓度下使水发生凝胶化，形成水分子凝胶。

From July 1, 2006, the new electronic and electrical products into the EU market, lead, mercury, hexavalent chromium, polymerization bromide biphenyl or polymerization bromide diphenyl ether content must not exceed 0.1% of the weight of the components, the cadmium content of no more than 0.01% of the weight of the host material.

从2006年7月1日起，新投入欧盟市场的电子电器产品中铅、汞、六价铬、聚合溴化联苯或者聚合溴化联苯乙醚含量不得超过该元件的重量的0.1%，镉的含量不得超过所在材料重量的0.01%。

Isoprene rubber was prepared with titanium catalyst modified by diphenyl ether ,and the effects of addition orders of various catalytic component on the monomer conversion,gel content and relative molecular mass were discussed in detail.

用二苯醚改性钛系催化剂合成了异戊橡胶，讨论了催化剂各组分加料顺序对单体转化率、产物凝胶含量和相对分子质量的影响。

Electronic and electrical equipment,Polybrominated diphenyl ether, Geen product design

多溴联苯醚广泛用作EEE中塑料件的阻燃剂，其消耗量随着电子电气行业的高速发展而不断增加，据统计仅在2001年内，世界P

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。