查询词典 spiro

The recent progress in electroluminescence device including spiro compounds of fluorene and anthracene is discussed in this paper. The synthetic methods of double-spiro and single-spiro organic compounds together with EL devices are described in detail.

对近年来含芴、蒽螺环结构发光材料的研究进展进行了总结，重点介绍了含有双螺、单螺结构的有机电致发光材料的结构和特性，给出了部分有机化合物的合成方法。

Synthesis of Antidote of N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane BI Hong-mei, ZHANG Jin-yan, LIANG Ying, SHEN Yong (College of Arts and Sciences Heilongjiang August First Reclamation University, Daqing 163319, Heilongjiang, China) Abstract: N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane was synthesized by one pot method with isopropanolamine, cyclopentanone and dichloroacetyl chloride. The optimum reaction conditions obtained are as follows:the proportion in moles of the above materials is 1∶1∶1.2, reaction solvent is toluene, reaction temperature is -15 to -10 ℃,reaction time is 3 h, under the optimum condition, the yield of the compound is 50.0%.

除草剂解毒剂N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷的合成毕洪梅，张金艳，梁英，沈勇(黑龙江八一农垦大学文理学院，黑龙江大庆 163319)摘要：以33%的氢氧化钠水溶液为缚酸剂，异丙醇胺、环戊酮和二氯乙酰氯为原料，采用&一锅法&合成了N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷，采用正交实验法得到最佳反应条件：反应原料摩尔比为1∶1∶1.2，苯作溶剂，反应的温度为-15 ℃~-10 ℃，搅拌时间为3 h，产率达到50.0%。

Photos of myself shaking hands with Spiro Agnew and offered to sign them, but by then the crowd had dispersed.

0英寸的我与斯派罗？艾格纽握手的照片给他们签名，可这个时候，人群却散开了。

US Vice President Spiro Agnew resigned after being fined US $10,000 for income tax evasion.

美国副总统斯皮罗？阿格纽在因为偷税遭罚1万美元后辞职。

Later, I handed out some 8×10 photos of myself shaking hands with Spiro Agnew and offered to sign them, but by then the crowd had dispersed.

随后我掏出几张8×10英寸的我与斯派罗·艾格纽握手的照片给他们签名，可这个时候，人群却散开了。

Later, I handed out some 8x10 photos of myself shaking hands with Spiro Agnew and offered to sign them, but by then the crowd had dispersed.

随后我掏出几张8x10英寸的我与斯派罗·艾格纽握手的照片给他们签名，可这个时候，人群却散开了。

Later, I handed out some 8×10 photos of myself shaking hands with Spiro Agnew and offered to sign them, but by then the crowd had dis persed.

随后我掏出几张8×10英寸的我与斯派罗·艾格纽握手的照片给他们签名，可这个时候，人群却散开了。

President Richard Nixon asked him to replace vice president Spiro Agnew. Agnew had resigned over accusation of financial corruption.

尼克松总统要求他取代斯比罗安纽副总统的职位，安纽是迫于财政腐败指控而辞职的。

Spiro Theodore Agnew: Television News Coverage I think it's obvious from the cameras here that I didn't come to discuss the ban on cyclamates or DDT.

太平凡了！然而平凡琐碎的400多天从我身边走过时，我却爱上了那一丝新绿，爱上了我所衷情和选择的幼教事业。

Ford became Richard Nixon's Vice-President after Spiro Agnew was forced to leave the office to avoid corruption charges.

在尼克松政府副总统斯皮罗·阿格纽为逃避贪污罪离任后，福特被尼克松任命为副总统。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。