查询词典 precursors

As to the synthesis of the materials for dielectric resonators, i.e., Ba2Ti9O20, the sprayed pyrolysis of metallo-organic precursors was found superior to coprecipitation process.

至於合成Ba2Ti9O20介电共振器的材料的方法，以有机金属物喷雾热解法较优於共沈法。

This approach avoided the long duration at high temperatures in traditional methods and unstable precursors in metathesis reactions.

这种合成方法不需要单质反应的高温及长时间处理，也避免金属氯化物与碱金属硫化物或硒化物之间的交换反应中不稳定的前驱物。

Aluminosilicate mesoporous molecular sieves are synthesized with natural ore and microcline as main raw materials,and the precursors of 13X zeolite as crystal source,by integrating the synthetic procedures of mesoporous MCM-41 and microporous 13X zeolite.

以天然矿物微斜长石为主要原料，13X沸石前驱体为晶核剂，结合介孔分子筛MCM-41与13X沸石合成工艺，合成了孔壁中含有13X沸石基本结构单元的铝硅酸盐介孔分子筛。

Aluminosilicate mesoporous sieve s with 13X zeolite units in the pore wall were synthesized with a natural ore,microcline,as the main raw material,and the precursors of 13X zeolite as the crystal source,by integrating the procedures for MCM-41 and 13X zeolite synthesis.

以天然矿物微斜长石为主要原料，以13X沸石前驱体为晶核剂，结合介孔分子筛 MCM-41与13X沸石合成工艺，合成了孔壁中含有13X沸石基本结构单元的铝硅酸盐介孔分子筛。

Aluminosilicate mesoporous sieves with 13X zeolite units in the pore wall were synthesized with a natural ore, microcline ,as the main raw material,and the precursors of 13X zeolite as the crystal source,by integrating the procedures for MCM-41 and 13X zeolite synthesis.

以天然矿物微斜长石为主要原料，以13X沸石前驱体为晶核剂，结合介孔分子筛MCM-41与13X沸石合成工艺，合成了孔壁中含有13X沸石基本结构单元的铝硅酸盐介孔分子筛。

As products of secondary metabolism, glycans are constructed from simple monosaccharide precursors.

聚糖是次级代谢产物，由简单的单糖聚合而成。

The differentiation of neural stem cells/neural precursors is a hot spot in neurobiological research.

神经干细胞／前体细胞分化是神经生物学研究的热点。

When he read about this finding, University of Illinois chemistry professor Eric Oldfield realized that the chemical precursors of the Staph carotenoid were identical to those that led to production of cholesterol in humans.

当读到这一发现，美国伊利诺斯大学化学教授Eric Oldfield意识到葡萄球菌类胡萝卜素的化学前体与那些在人体中生产胆固醇的前体是相同的。

These precursors are Glutamine, Ornithine, and Arginine all of which belong under the "L" amino acids group while Arginine and Ornithine are well-known for their proficiency in producing growth hormones.

这些前体的谷氨酰胺，鸟氨酸，精氨酸和所有属于下的" L "氨基酸组同时精氨酸和鸟是众所周知的熟练生产生长激素。

It is feasible to overgrow mesoporous MCM-41 on the rough surfaces of the grains. The obtained samples possess the ordered hexagonal mesoporous structure of MCM-41-type molecular sieves. Mesoporous molecular sieves (denoted as MZ-B) with ordered hexagonal structure have been successfully synthesized by the assembly of the precursors from filtrate of alkali-treated ZSM-5 zeolite with CTMABr surfactant micelles in alkaline media based on S+I– static electricity route.

而碱处理ZSM-5沸石得到的滤饼为富含超细化颗粒的晶粒，且晶粒粗糙度很高，因此易于附晶生长介孔分子筛，得到的微孔颗粒表面附晶生长的介孔分子筛，具有很好的长程有序度，为六方排列的孔道结构。

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。