烯

In order to solve the problem of the clustering of the zeros of permanental polynomials of the fullerenes, a multi-dimensional stable marriage model is proposed, relevant algorithms are given, and the clustering problem is solved.

本文提出了多维稳定婚姻问题的模型，同时相应地给出了算法，并成功地应用于富勒烯积和多项式零点的聚类问题。

The selective response of Holotrichia oblita to different plant volatiles (1) By steam distillation and dichloromethane, in the Y-tube olfactometer bioassay, the crude extract from castor-oil plant leaves was obviously attractive to female and male of Holotrichia oblita than cotton, Abutilon theophrasti Medic, control dichloromethane.

该结果表明，蓖麻叶片粗提物中含有引诱华北大黑鳃金龟的化学物质。(2)华北大黑鳃金龟成虫对8种化合物的嗅觉仪行为反应结果表明，无论对雌虫还是雄虫，肉桂醛、邻苯二甲酸二丁酯、苯酚、香草醛、苯甲醛的诱虫活性显著高于顺-3-己烯醇。

Acenaphthene was dehydrogenated to afford acenaphthylene by photochemical reaction with N bromosuccinimide in benzene with the addition of quinoline at room temperature and atmospheric pressure was studied.

在常温常压下，以苯作为溶剂，加入喹啉，使苊与N－溴代丁二酰亚胺发生光化学脱氢反应生成苊烯。

HPLC was coupled with both mass spectroscopy and ultraviolet absorption spectroscopy for simultaneous separation and characterization of the products from glow plasma reaction of chloroform.(3) Phosphorus pentachloride has been used to perchlorinate acenaphthene under moderate pressure and temperature in sealed reaction vessels.

在此基础上，以反相C〓柱为固定相，甲醇/乙醇/环己烷为流动相，采用梯度洗脱的方法，对氯仿辉光放电合成产物进行高效液相色谱-紫外光谱-质谱联用分离分析，成功的分离得到包括富勒烯C〓和全氯代碳簇在内的数十种产物，并得到了相应的质谱和光谱数据。

Another reason for this increasing interest is that formaldehyde and acetaldehyde are more available than propylene.

另一个原因，这越来越感兴趣的是，与比丙烯，甲醛和乙醛更容易利用。

The synthesis of acrolein by means of the catalytic vapor phase condensation of formaldehyde and acetaldehyde was studied.

利用冷凝甲醛和乙醛的气相催化法，来研究丙烯醛的合成。

Acetaldehyde generated from the 2 - butene aldehyde carbonyl and the reaction is the condensation of methylene ...

由乙醛生成2－丁烯醛的反应是羰基与亚甲基发生缩合的。。。

A capillary gas chromatographic method with FID detector for the separation and determination of allethrin and octachlorodipropylether in disc mosquito repellent incenses was established.

采用毛细管气相色谱法对盘香中烯丙菊酯和八氯二丙醚含量进行了分离测定，结果表明，烯丙菊酯和八氯二丙醚分别在0。

A capillary gas chromatographic method with FID detector for the separation and determination of allethrin and octachlorodipropylether in disc mosquito repellent incenses was established.

采用毛细管气相色谱法对盘香中烯丙菊酯和八氯二丙醚含量进行了分离测定，结果表明，烯丙菊酯和八氯二丙醚分别在0.01~4g/L和0.03~3.60g/L范围内线性关系良好，线性相关方程分别为y=3068.7x+443152.8和y=2412.8x+100704.9，线性相关系数r=0.9997，0.9996。

A series of β-vinyl alcohols were synthesized using methyl alkyl ketones or methyl aryl ketones and allyl chloride as starting materials by Grignard reagent method.

以烯丙基氯和甲基酮为原料，通过格氏试剂法合成了-β烯醇化合物，并探讨了各种因素对收率的影响，获得了控制反应过程的最佳参数。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。