查询词典 undecane

To study the analysis method of samples including a combination of dimethylformamide, undecane and butanone in the air of workshop.

［目的］研究工作场所环境空气中二甲基甲酰胺、十一烷和丁酮混合物一次吸附、一次分离的定量分析方法。

Comparing with those of steam distillation,the contents of undecane, nonane increased by SPME; and some components that would not be extracted by steam; disti llation were extracted by SPME, such as verbenol,yElenene,calarene,(1)aGurjunene,viridiflorol etc.

结论与水蒸气蒸馏法相比，固相微萃取法得到的十一烷、壬烷等烷烃的含量增加；并且提取出了水蒸气蒸馏法不能蒸馏出来的一些成分，如马鞭草烯醇、γ榄香烯、白菖烯、α古芸烯、绿花白千层醇等。

A method is introduced for quantitative determination of 1,2-dichloride ethylane by gas chromatography with PEG-20M chromatographic column,FID and using undecane as internal standard.

介绍用气相色谱仪、以PEG-20M色谱柱和FID检测器对1，2-二氯乙烷进行的一种定量测定方法，其内标物选用正十一烷。

A metal-organic complex thin film, constructed by Cu and a new organic material 3,9-dianthracene-10-(dicyanomethylene-9--2,4,8,10-tetrathiaspiro [5,5] undecane was reported. The device with a sandwich structure can be transferred from high to low-impedance under 6V with delay and switching times of less than 1000 and 30 ns, respectively.

开发出另一种新型有机分子材料3，9-双(10--9-亚甲蒽基-2，4，8，10-四硫杂螺[5，5]十一烷，该分子材料与Cu络合构成的电双稳薄膜Cu-AOSCN，阈值电压6V左右，跃迁时间小于30ns，弛豫时间小于1us。

An expansion monomer 3, 9-dihydroxymethyl-di (6-methyl-5 -hydroxyl)-2- heptanone-1, 5, 7, 11tetraoxaspiro [5, 5] undecane was synthesized and its volume change during polymerization is about +3.04%. Its prepolymer was also synthesized by toluene 2, 4-diisocyanide with it.

由三经甲基丙烷合成了螺环原碳酸酯单体3'、9'－二羟甲基－3'，9'-二乙基－1，5，7，11－-四氧杂螺环[5、5]十一烷单体（体积膨胀率＋3.04%）以及它的预聚物，并用其来改性环氧树脂B-63。

The compound 3, 9-bis (2＇, 4＇, 6＇-tribromophoxy)-2, 4, 8, 10-traoxa -3, 9-dip- hosphospiro [5.5] undecane -3, 9-dioxide (HFR-1) was prepared with pentaeryth- ritol, phosphorus oxychloride and 2, 4, 6-tribromophenoxy soldium by esterifica- tion and condensation reaction.

以三溴苯酚钠、三氯氧磷、季戊四醇为原料，通过酯化和缩合两步反应合成了阻燃剂3，9-双(2'，4'，6'三溴苯氧基)-2，4，8，10-四氧代-3，9-二磷螺环-3，9-二氧[5.5]十一烷。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。