乙胺

To minimize the contamination of detrimental elements such as sulfurand chlorine, a two-step sol-gel process was successfully developed to synthesize SiC precursors with oxalic acid and hexamethylenetetramine HMTA as the catalysts, which are free of sulfur and chlorine. Tetraethoxysilane TEOS and phenolic resin were used as the silicon source and carbon source, respectively.

为了尽量减少硫、氯等有害元素的含量，本文用不含有害元素的草酸和六次甲基四胺HMTA为催化剂，正硅酸乙酯TEOS为硅源，酚醛树脂为碳源，成功探索出了制备SiC前驱体的两步法溶胶-凝胶工艺。

Methods: The chromatographic separation was performed on a Hypersil ODS2 column(250 mm×4.6 mm, 5 μm) with mobile phases of potassium dihydrogen phosphate hexyl amine solution-acetonitrile(74∶26) for the determination of its related substances and methanol-0.05 mol/L potassium dihydrogen phosphate solution(1∶1) for the determination of dexbetamethasone sodium phosphate. The flow rate was 0.8 ml/min, the detection wavelength was 254 nm, the column temperature was 25℃ and the sample size was 20 μl.

色谱柱为Hypersil ODS2柱(250 mm×4.6 mm，5 μm)；有关物质测定的流动相为磷酸二氢钾己胺溶液-乙腈(74∶26)，含量测定的流动相为甲醇-0.05 mol/L磷酸二氢钾溶液(1∶1)；流速为0.8 ml/min，检测波长为254 nm，柱温为25℃，进样量为20 μl。

Technical characteristics and existing problems of cyanide-free silver plating technology were summarized through the analysis of cyanide-free silver plating systems of thiosulfate,succinimide,iodide,hydantoin,sulfite and others.

通过对硫代硫酸盐、丁二酰亚胺、碘化物、乙内酰脲、亚硫酸盐以及其它无氰镀银体系的分析，总结了当前无氰镀银工艺的技术特点及存在的问题，并阐述了无氰镀银技术的发展历程和研究现状。

The most commonly used drugs Bleomycin, mitomycin C, Adriamycin, 5 - 5-fluorouracil (5 - Fu), methotrexate, cyclohexyl - nitrosourea, imipramine hydrazone, Vindesine, etoposide (VP-16), chlorine and ammonia-platinum, a single chemotherapy drug remission rate in the 15% to 20% remission for 1 to 4 months.

最常用的药物有博来霉素、丝裂霉素C、阿霉素、5-氟尿嘧啶（5-Fu）、甲氨喋呤、环己亚硝脲、丙咪腙、长春花碱酰胺、鬼臼乙叉甙（VP-16），以及顺氯氨铂，单一药物化疗的缓解率在15％～20％，缓解期为1～4个月。

And content of Ach was tested by alkaline hydroxylamine method.

用Morris水迷宫法测试小鼠的空间记忆能力，用比色法测定大脑皮质胆碱乙酰转移酶、胆碱酯酶活性，用碱性羟胺法测定乙酰胆碱含量。

The stability and hygroscopicity of the electrolyte film and its conductivity changing with its constitution and temperature have been studied in the paper.

本文采用聚乙二醇和环氧树脂／三乙烯四胺凝胶组成互穿聚合物网络，制备了IPN——ZnCl2高分子固体电解质膜，讨论了IPN的成因和电解质膜的电导率随组成、温度的变化及其膜稳定性和吸水性。

It was detected by DSC that the temperature of imide and crosslinking reaction are differentiated by the catalysis of acetyl acetone copper and rare earth.

DSC研究表明乙酰丙酮铜催化剂和稀土催化剂可以分开低聚物的亚胺化和交联反应温度。

The GV should be sprayed in the peak period of the eggs and the low instar larvae.

喷布的雾滴细，可以提高防治效果。病毒与乐果、氧化乐果、乙酰甲胺磷等农药临时混用。

A novel reversed-phase ion-pair high performance liquid chromatographic method was developed for separation and determination of sodium iron ethylenediaminetetra-acetate in iron-fortified soy sauce.

建立了用反相离子对高效液相色谱法分离和测定铁强化酱油中的铁营养强化剂乙二胺四乙酸铁钠的方法。

DAC, similar to CPC in structure, contains theβ-lactam ring.

去乙酰头孢菌素C的结构与头孢菌素C类似，含有β-内酰胺环。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。