丁基

The aluminum frame is formed one time with minimum connectors left, meanwhile, double sealants of butul silicon and polysulfide rubber or structural silicon are used to keep the airtightness and the using time.

密封性：铝间隔框采用自动弯管技术一次成型，最大限度地减少接驳处；采用丁基胶和聚硫胶或结构胶双道密封，确保中空玻璃的密封性并延长其使用寿命。

The highest ee value of 71% was achieved by using chiral molybdenum 2'-pyridingyl alcoholate complex at 0 ℃. After addition of phase transfer catalyst Bu4NBr, the yield and ee value were remarkably increased.

其中手性吡啶醇二氧合钼在0℃下的对映选择性ee值达到71%；加入相转移催化剂四正丁基溴化铵，催化剂的活性和对映选择性有显著提高，其中手性吡啶醇二氧合钨在50℃下ee值由54％提高到78%。

Tertbutyl triazine might be a good algaecide with high efficiency and durative action.

特丁基三嗪具有高效、作用时效长的特点，可能是一种比较理想的赤潮藻去除剂。

In this study enamine was used as the reactive intermediate for alkylation of cyclohexanone alkylate,to provide a new route to synthesize the perfume-α-tert-butylcyclohexanone after overcoming many disadvantages of the traditional technical route,such as the complicated of reaction steps,the expensive reagents adopted,the high demand for the equipment used,and the low yield of product.

利用烯胺作为环己酮烷基化的活性中间体，为香料α-叔丁基环己酮的合成提供了一条新的途径，克服了传统工艺反应步骤烦琐，试剂昂贵，设备要求较高，产率不高等缺点，易于工业化生产。

BACKGROUND AND AIM: The study was undertaken to assess the oxidative stress and DNA damage in human amnion cells induced by TBT.

背景与目的：研究三丁基锡(tributyltin， TBT)对人羊膜细胞FL氧化损伤和DNA损伤的诱导作用。

Anisaldehyde was synthesized from p-hydroxybenzaldehyde with dimethyl carbonate by microwave irradiation under phase transfer catalyst tetrabutylammonium bromide, The effect of power, time, solvent and catalyst of reaction on yield were researched.

以四丁基溴化铵为相转移催化剂，采用对羟基苯甲醛和碳酸二甲酯为原料，微波辐射下合成大茴香醛。考察了反应溶剂、功率、时间和催化剂对反应产率的影响。

A method for analysis of butyl hydroxy anisole in simvastatin had been established by HPLC.

建立了测定辛伐他汀中抗氧化剂叔丁基羟基茴香醚含量的高效液相色谱方法。

Due to the usage of TBT in antifouling paint of boats and ships.

是由于三丁基锡在船舶防污涂料中的使用引起的。

Through research, MTBE is a good high-octane level of gasoline additives and antiknock.

通过研究，甲基叔丁基醚是一种良好的高辛烷值汽油添加剂和抗爆剂。

Results: Oxidation resistance effect of 0.10% loquat leaf flavanone was close to that of 0.05% tertiary butylhydroquinone, indicating the loquat 1eaf flavanone had obviously oxidation resistance effect to the fat with quantitative relationship. Antiscorbutic acid and the loquat leaf flavanone has the coordination oxidation resistance effect.

结果：0.10%枇杷叶黄酮的抗氧化效果和0.05%叔丁基对苯二酚相近，表明枇杷叶黄酮对油脂的抗氧化效果明显，且作用呈一定的量效关系，抗坏血酸与枇杷叶黄酮有协同抗氧化效应。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。