查询词典 precursors

The results with DTA show that freewater, PEG, Hac and n-C4H9OH evaporate under 320℃. Organic compounds oxidate and precursors of the samples decoposite between 320~500℃.

热分析结果表明：样品在320℃以下有自由水、PEG、HAc、n-C4H9OH的挥发，而在320~500℃之间样品中的有机物发生氧化反应和前驱体发生分解反应。

Yet, these precursors ultimately give rise to a panoply of nerve cells that are enormously diverse in form and function and together form the brain.

这种细胞在生长的过程中不断生成不同种类的神经细胞，而这些神经细胞最终组成了人类的大脑。

To realize our goal, two kinds of vanadium source, including amorphous vanadium pentoxide, and the intermediate in the process of forming vanadium pentoxide gels, were used as precursors in this study.

于是，我们在研究中使用了两种钒源用作反应前驱体（一种是无定形的V2O5粉末，另一种是H2O2处理V2O5形成溶胶过程的中间体），选取了多碳醇与烷基链相同的单胺两种结构导向剂。

Major procurement of goods: a three-chlorosilanes, dichloromethane, AE activity ester, 3-iodine Silane, special acid, pentyl chloride, triethylamine, thiadiazole, tetrazolylazo acid, 2 - Acetamide, tetrahydrofuran, the four-guanidine, isopropanol, five phosphorus trichloride, sodium vary bitter, acid, sodium phenylacetate, 6-2 silicon n-amine, Ethylacetoacetate , Methyl isobutyl ketone, potassium dihydrogen phosphate, aluminium oxide, DL methionine, N, N-dimethylaniline, NN-diethyl aniline, 4 sodium EDTA, Anhydrous sodium sulfate, ammonium sulfate, potassium sulfate, sodium acetate, sodium carbonate, DMC, formic acid, sodium chloride medicinal, oxalate, protopine, acetone, alcohol, acetic acid, vinegar Ethyl, butyl acetate, methanol, ethanol (anhydrous, industrial, medicinal), formaldehyde, Ye Jian (30%), hydrochloride (industrial-grade, refined grade, reagent level), sulfate (98%), Ammonia, calcium carbonate, chlorine dioxide, 6 - APA ,7-ACA ,7-ADCA ,7-ANCA, sulbactam, ceftazidime activity ester, Deng salt (hydroxymethyl-K, acid precursors Potassium, sodium dihydrogen methyl), resin, the enzyme, water treatment agent, Xiao Mo agent, demulsifier, flocculants, activated carbon, all kinds of medicinal materials, All kinds of additives

三甲基一氯硅烷、二氯甲烷、AE活性酯、三甲基碘硅烷、特戊酸、特戊酰氯、三乙胺、噻二唑、四氮唑乙酸、二甲基乙酰胺、四氢呋喃、四甲基胍、异丙醇、五氯化磷、异辛酸钠、苯乙酸、苯乙酸钠、六甲基二硅胺烷、乙酰乙酸乙酯、甲基异丁酮、磷酸二氢钾、三氧化二铝、DL蛋氨酸、N，N-二甲基苯胺、NN-二乙基苯胺、乙二胺四乙酸四钠、无水硫酸钠、硫酸铵、硫酸钾、醋酸钠、碳酸钠、碳酸二甲酯、甲酸、药用氯化钠、草酸、片碱、丙酮、正丁醇、冰醋酸、醋酸乙酯、醋酸丁酯、甲醇、乙醇、甲醛、液碱（30％）、盐酸（工业级、精制级、试剂级）、硫酸（98％）、氨水、碳酸钙、二氧化氯、6－APA、7－ACA、7－ADCA 、7－ANCA、舒巴坦、头孢他啶活性酯、邓盐(羟甲基钾、前体酸钾、二氢甲基钠)、树脂、生物酶、水处理剂、消沫剂、破乳剂、絮凝剂、活性碳、各种药用辅料、各种添加剂

Phenylalanine and tyrosine are precursors to catecholamines.

苯丙氨酸和酪氨酸是儿茶酚胺的前体。

The precursors of nickel phosphide and molybdenum phosphide catalysts were prepared by co-impregnation method.

过渡金属磷化物被认为是一种高活性、高稳定性和具有抗硫中毒性能的新型催化材料。

Mercantilism and physiocracy were precursors of the classical economics of Smith and his 19th-century successors.

第四、五段：经济学研究的古代和现代理论。

An unstable important intermediate ,2- methoxymethyl-hydroquinone which is very easy to oxidize and polymerize, and its precursors were first synthesized, a...

第一、二条合成线路前人未见报导，从中得到了四个苯并呋喃类衍生物，并详细地探索了环化反应的条件。

In some areas, obvious precursors can be observed, but in other areas, it may be difficult to observe any appreciable precursory phenomena.

在一些区域，可以观测到明显的前兆，而在另一些地区却很难观测到明显的前兆现象。

Short chain fatty acid, propyl alcohol, methionine and dimethylamide are the possible precursors for spiramycin formation. Addition of 0.6% propyl alcohol into fermentation medium increases the spiramycin productivity by 24%, while addition of short chain fatty acids, methionine, or dimethylamide has a repression effect on spiramycin production.

合成螺旋霉素的前体物质可能有短链脂肪酸、丙醇、蛋氨酸和二甲胺等，在发酵培养基中加入0.6％的丙醇可以使螺旋霉素的发酵单位提高24％，而短链脂肪酸、蛋氨酸和二甲胺对菌体生长和螺旋霉素的生物合成有不同程度的抑制作用。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。