甲

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中，自行设计制作出了氯化管式反应器，在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯，根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件，二氯异丁烯的总收率达65％以上，选择性达80％；接着，对二氯异丁烯进行水解反应制得了2-甲烯-1，3-丙二醇，讨论了相关因素对水解反应的影响，并通过正交试验和单因素试验得到了较佳工艺条件，二氯异丁烯的转化率达100％；同时还对制备的2-甲烯-1，3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO，并对产品进行了鉴定，从而打通了整个工艺路线。

This technique pro-duced not only N-phosphonomethyliminodiacetic acid with high quality but also a great deal of chloromethane by the hydrolyzation of dimethyl phosphite and methylal .

提供了一种利用亚磷酸二甲酯残液(亚磷酸二甲酯生产过程中的副产)和甲缩醛(甘氨酸法生产草甘膦过程中的副产)为原料来合成双甘膦的方法，采用该工艺可以合成高含量的双甘膦，而且利用亚磷酸二甲酯残液和甲缩醛的充分水解可生成大量的氯甲烷，从而大大提高上述副产物的综合利用价值，具有很好的发展前景。

Methanol can be further processed to hundreds of organic products, such as formaldehyde, MTBE, acetic acid, sodium methoxide, chloromethane , methyl formate, formamide, 2-methyl formamide etc., the demand for those will be expand in future:① in 2000, the production of formaldehyde is 2,068,000 tons, along with our country continue reinforce the infrastructure, the consumption of formaldehyde will increase rapidly.

甲醇可深加工的有机化工产品有上百种，如甲醛、 MTBE、醋酸、甲醇钠、氯甲烷、甲酸甲酯、甲酰胺、二甲基甲酰胺等等，预计这方面的需求今后会有适度发展：① 2000年我国甲醛产量达206.8万吨，近年随着我国基本建设的不断加强，甲醛消费量增长迅速。

The differential diagnosis is epiglottic cyst or other benign tumors, including thyroglossal duct, dermoid cyst, teratoma, lymphangioma, chondroma, lingual thyroid, or papillomatosis.

会厌血管瘤必须与会厌囊肿或是其他的会厌良性肿瘤做鉴别诊断，包括甲状线舌骨囊肿、皮样囊肿、畸胎瘤、淋巴管瘤、软骨瘤、舌部甲状或是乳突状瘤等。

The adults and larva of cigarette beetle in the tobacco treated with fumigation died completely. The adult mortality of cigarette beetle in CK was 28.3% and its larval mortality was 40.0%.

熏蒸处理的烟草中烟草甲成虫和幼虫全部死亡，对照烟草甲的成虫死亡率为28.3%，幼虫死亡率为40.0%。

The sex pheromone of click beetle was reviewed from the terms of distilled, isolated and identified, and its application status in this paper, to provide a guidance for the study of it.

本文对叩甲科昆虫性信息素的提取、分离鉴定及应用现状进行了综述，以期对我国在叩甲性信息素的研究提供一定指导。

Of Staphylococcus aureus was methicillin-resistant Staphylococcus aureus and 77.35% of coagulase negative Staphylococcus was methicillin-resistant coagulase negative Staphylococcus respectively.

耐甲氧西林金黄色葡萄球菌和耐甲氧西林凝固酶阴性葡萄球菌分别占金黄色葡萄球菌和凝固酶阴性葡萄球菌的60.58%和77.35%。

In insect taxonomy attached Coleoptera, a walk to Branch, is a powder.

在昆虫分类学上隶属鞘翅目，拟步行甲科，粉甲属。

A New Record Genus of Strongyliini Coleoptera , Tenebrionidae from China , with Two New Species and Two New Names

中国树甲族－新纪录属二新种及二新名鞘翅目，拟步甲科

But seek not Bethel, nor enter into Gilgal, and pass not to Beersheba: for Gilgal shall surely go into captivity, and Bethel shall come to nought.

不要往伯特利寻求，不要进入吉甲，不要过到别是巴；因为吉甲必被掳掠，伯特利也必归於无有。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。