丁基

It was also observed malpighian tube and tail spine teratogenesis in embryo development test, more than 50% of daphnids being deformed during the test.

胚胎生长试验结果显示，氯化三丁基锡对大水蚤胚胎具有高毒性且导致胚胎生长畸形之比率高达50%。

Objective Widespread used as gasoline oxygenate additives, methyl t-butyl ether were added to gasoline to enhance the octane number, reduce carbon monoxide in exhausts and to substitute for tetraethyl lead as an anti-knock agent.starting in the winter of 1992, MTBEup to 15wt.

研究目的甲基叔丁基醚(Methyl Tert-Butyl Ether，MTBE)是一种新型的汽油添加剂，主要用来增加汽油辛烷值，提高汽油燃烧效率，减少汽车尾气中一氧化碳等有害物质的排放，并代替四乙基铅用作汽油防爆剂。

Objective Study the effect of tribultyltin chloride on thymocyte apoptosis and Fas protein expression in mice,try to find the mechanism of immunotoxicity.

目的研究三丁基氯化锡对小鼠胸腺细胞凋亡及Fas蛋白表达的影响，探讨TBTCL的免疫毒性机制。

Herbicide tertbutyl triazine was used for removal and control of red tide caused by Phaeocystis globosa and Alexandrium tamarense under laboratory condition.

研究了特丁基三嗪对塔玛亚历山大藻和球形棕囊藻两种赤潮生物的杀灭和控制作用。

The results showed that the effective concentration of tertbutyl triazine for killing P. globosa and A. tamarense was 0.3 mg L-1 and 0.2 mg L-1, respectively, for 96 hours.

结果表明，特丁基三嗪能有效地控制和杀灭塔玛亚历山大藻和球形棕囊藻，其中96 h杀灭塔玛亚历山大藻的有效浓度为0.2 mg L-1，杀灭球形棕囊藻的有效浓度为0.3 mg L-1。

Triphenyl phosphite provided prominent stabilization only when used in combination with other stabilizers. Good results have been obtained for both polyether-urethane and nitrate esters when using 2,6-di-t-butyl-4-methyl-phenol as stabilizer.

亚磷酸三苯酯单独使用时效果较差，但与其它种类的稳定剂混合使用能得到较好的效果。2，6-二叔丁基-4-甲基酚对硝酸酯和聚氨酯粘结剂均具有良好的稳定作用。

The excess of ethyl orthosilicate should render the chain terminal unreactive toward the crosslinking...

降解是由于水在二月桂酸二丁基锡酯或它的水解产物月桂酸催化下使聚二甲基硅氧烷主链的Si—O—Si键水解所引起的。

The results show that the urushiol dimer has the similarstructure with this compound.Therefore,we concluded that thestructure of alkyl phenyl ether is main structure formed in urushiolpolymerization.

合成并用2D—NMR方法研究了烷基芳醚化合物：2—丁基苯醚此化合物的NMR数据进一步确证了烷基芳醚型漆酚二聚体的存在。

G. the perfumes. The wall forming materials were TDI (2, 4-toluene diisocyanate) or 80/20TDI, triphenyl methane triisocyanate and biphenyl methane-4, 4-diisocyanate , Poly vinyl alcohol was used as protective colloid and GPE2040 was used as the emulsifier.

壁材单体分别使用了2，4-甲苯二异氰酸酯、80／20-甲苯二异氰酸酯、三苯基甲烷-4，4′，4-三异氰酸酯和二苯甲烷-4，4′-二异氰酸酯；保护胶体是聚乙烯醇；乳化剂是聚醚2040；催化剂使用二月桂酸二丁基锡。

The new procedure is much convenient for products separation excluding the wet viscid isocyanuric acid.

在优化条件下，使用5mol%的四丁基溴化铵催化剂，大部分查耳酮类底物在3-5小时内定量转化成环氧化产物。

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。