研究了镇肾平对二甲基苯并蒽诱导的叙利亚仓鼠口腔癌变的预防作用。
The preventive effects of zhenshenping on dimethyl benzanthracene induced oral carcinogenesis in syrian golden hamster were studied.
目的：研究增生平对二甲基苯并蒽（DMBA）诱发金黄地鼠口腔癌的预防作用。
Objecti The preventive effects of zhenshenping on dimethyl benzanthracene(DMBA)induced oral carcinogenesis in syrian golden hamster were studied.
十六烷二甲基苯氧乙基溴化铵的乳化能力、起泡力和泡沫稳定性都比较弱，具有一定的消泡和抑泡作用。
The emulsibility, producing bubble ability and the foam stability for PDPB are weaker, and it has definite effect on disappeared and restrained bubbles.
采用邻二甲苯和一氧化碳为原料、无水三氯化铝为催化剂，对3，5-二甲基苯甲醛的羰基化合成反应进行了研究。
A new method related to the carbonylating synthesis of 3,5-dimethylbenzaldehyde was studied using o-xylene and CO as the raw materials and anhydrous AlCl3 as the catalyst.
气味来源：壬烷，邻苯二甲酸脂，正丁醛，二甲基砜，吲哚
采用微波辐射技术，以苯酚、氢氧化钾和氯化苄为原料，N, N -二甲基甲酰胺为溶剂合成了苄苯醚。
Using phenol and benzyl chloride as raw materials and n, N-dimethyl formamide (DMF) as solvent, benzyl phenyl ether was synthesized under microwave radiation.
本文以聚矾和磺化聚砜共混物为膜材料，二甲基乙酰胺为溶剂，聚乙烯吡咯啉酮和邻苯二甲酸二甲酯为添加剂配制纺丝液，纺制外压中空纤维超滤膜。
This paper reported the preparation of hollow fiber UF membrane, using PS and SPS as membrane spinning materials, DMA as solvent, PVPand dimethyl phthalate as additives.
噻吩衍生物的吸附能顺序依次为，4，6-二甲基二苯并噻吩<二苯并噻吩<噻吩<苯并噻吩，与实验结果相近。
The calculated adsorption energy of the thiophenic compounds increased as 4, 6-DMDBT< DBT< TP< BT, which agrees with the experiment.
与聚对苯撑二甲基聚合物相比引入乙酰基后聚合物的溶解性、介电常数和损耗因子均有所提高。
The solubility, dielectric constant, and dissipation factor of the polymer were improved alter acetyl substitution of poly (p-xylylene).
采用自行设计制造的重氮甲烷发生装置，有效控制了二甲基亚硝基苯磺酰胺的反应用量，减少了有害气体的排放。
By adopting the self-designed diazomethane generating device, the dosage of reaction reagent of diazald was effectively controlled and the harmful gas release was reduced.
标题化合物C24H22N2O2是由N-（4-羟基苯亚甲基）喹啉-5-胺和5，5-二甲基-1，3-环己二酮在氯化三乙基苄基铵（TEBAC）催化下以水作溶剂反应而得。
The title compound C24H22N2O2 has been synthesized by the reaction of N-arylidenenaphthalen-2-amine with 5,5-dimethyl-1,3-cyclohexadione water catalyzed by triethylbenzylammonium chlorideTEBAC.
由邻甲苯胺和甲醛水溶液反应合成得到了高纯度的3，3 -二甲基-4，4 -二氨基二苯甲烷（MDT），并对其性能进行了表征。
The polyimide monomer of 3,3 -dimethyl-4,4 -diaminodiphenylmethane(MDT)was synthesized through the reaction between O-methyl aniline and aqueous formaldehyde solution.
由邻甲苯胺和甲醛水溶液反应合成得到了高纯度的3，3 -二甲基-4，4 -二氨基二苯甲烷（MDT），并对其性能进行了表征。
The polyimide monomer of 3,3 -dimethyl-4,4 -diaminodiphenylmethane(MDT)was synthesized through the reaction between O-methyl aniline and aqueous formaldehyde solution.
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