查询词典 chemical method

Quantum chemical method was employed to investigate the mechanism of the reaction catalyzed by acid.

在此条件下环己酮的转化率和主产物2-羟甲基-1，4-二氧杂螺环[4， 5]癸烷的选择性分别为99.5%和98.5%。

The chemical method which is fit for tube and bar products has been the basis for forming a series of GB, but it needs subjoining.

其中适用于管棒材的化学方法已形成系列国标，但仍需增补；适用于板带材的化学方法仅限于试验研究之用。

In our experiments, the hafnium films were deposited on molybdenum substrates by radio frequency magnetron sputtering technology, and the barium oxide layers were prepared by the chemical method to simulate the grid structure of traveling wave tubes. Then, the surface phase and compositional change in the grid was studied under high temperature by annealing from 900K to BOOK, which can be used in explaining the suppression mechanism of hafnium film.

实验中，利用射频磁控溅射技术在Mo基底上制备了Hf膜，并利用化学方法制备了BaO涂层以模拟行波管栅极结构，随后在N_2保护下，通过在900K到1300K范围内退火，研究栅极处于高温工作环境下表面相结构和成分的变化，以此解释了Hf薄膜抑制栅极电子发射的工作机理。

The immune constitution chemical method was adopted to measure the positive TH neurons , whose cell plasm should be dyed into tan.

常规免疫组化法检测阳性神经元个数，阳性神经元判断标准：细胞浆棕褐色。

The CdSe quantum dots were fabricated by chemical method, and the quantum dots with different radii were obtained by the choice of the reaction time.

CdSe量子点由化学方法制备，通过选择不同的反应时间得到不同尺度的量子点样品。

The nano-Co particles were prepared by chemical method from zinc dust and cobalt chloride.

摘 要：以锌粉和氯化钴为原料，采用化学法制备纳米Co粒子。

The nanosheet-like strontium aluminates doped with Eu〓 and Dy〓 are prepared by a soft chemical method.

这些材料的余辉性能和发光亮度都强烈的取决于掺杂离子的成分和浓度以及制备工艺。

The Chemical method is based on the Diels-Alder reaction of conjugated dienes with maleic anhydride and the chromatographic analysis use a packed column with SE-30 as stationary phase.

建立了用共轭二烯烃与马来酸酐Diels-Alder特性反应和非极性固定液SE-30填充柱1m×1。

The mass ratio of glucosides was figured out with the unreact ratio of glucose and polysaccharides detected by chemical method.

结合用化学法测得的未反应葡萄糖、生成的二糖多糖的质量百分含量，可计算出AEO3糖苷化后混合物中的糖苷化物的质量百分含量。

The uncertainty for determination of iron concentration in zinc-iron coating of galvaneal by chemical method was evaluated.

对用化学法测定锌铁合金钢板镀层铁含量测量结果的不确定度进行评定，分析了该方法测定过程的不确定

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。