查询词典 two step

Investigating the influences of processing parameters on the C/Si molar ratio of resulted nanosized SiC powders indicated that there was a direct pyrolytic reaction from DMS to SiC as well as the previous proposed two-step reaction. Under the optimized processing conditions, the silicon carbide powders of homogeneous particle size distribution, spherical shape and stoichiometrical C/Si molar ratio are obtained. The silicon carbide particle consists of β-SiC crystallite arranged randomly.

论文系统研究了工艺条件对产物粉体C／Si摩尔比、粉体颗粒尺寸和组成粉体的SiC微晶尺寸的影响；研究了粉体制备过程中可能发生的化学反应，提出了反应过程中除了分步进行的生成SiC的反应外，同时在高温区还存在一步完成的生成SiC的化学反应的观点；通过调整工艺参数，制备得到了粉体尺寸分布均匀、呈均匀球状、C／Si摩尔比符合化学计量比的颗粒尺寸为40nm的纳米SiC粉体。

PI-1 and PI-2 polyimide films were prepared from 3,3′,4,4′-benzophenone tetracarboxylic dianhydride and ODA确良by two-step polymerization under the thermal and mixed imidization procedures.

采用两步法首先合成聚酰胺酸，然后经热酰亚胺化和混合酰亚胺化工艺制备了BTDA/ODA型的PI-1 和PI-2两种聚酰亚胺薄膜。

Synthesis and Characterization of MWNT-containing Polyurethane-urea Based on the typical two-step polyurethane-urea synthesis, self-crosslinkable polyurethane-urea compounded of PTMO Poly (tetramethylene oxide, MDI (4,4'-diphenylmethane diisocyanate) and extended by AEAPS (aminoethyl aminopropyl trimethoxysilane) were prepared.

含有纳米碳管的聚氨酷的合成、表征及性质研究首先通过典型的两步法合成了软段为pTMOPoly(tetramethyrene oxide，叠年东师范大李博士后么站银告硬段为MD！(4，4'一diPhenylmethane diisocyanate)，扩链剂为AEAPS (aminoethylaminoProPyltrimethoxysilane)的聚氨醋。

Finally,a veri few peopl take the last two step and then make a plan to get what thei want and carri it out.

最后，只有非常少的人除了采取最后二个步骤之外，还订定达成目标的计划。

This paper proposes a heter-cycle abutted CP structure and a two-step OFDM carrier frequency calibration algorithm.

设计了一种具有异周期毗邻结构的新型循环前缓，提出了相应的OFDM频偏估计算法。

When the temperature was at 25℃, the EFS30 OPS two-step method had a blastocyst rate of 62.22%, the highest rate in all groups. After the morulae cultured from thawed embryos from the best straw group and OPS group were transferred, all groups have obtained offspring.

在25℃温度条件下细管法和OPS二步法玻璃化冷冻后的小鼠2-细胞胚胎，经培养发育至囊胚后，用H33342染色，在荧光显微镜下观察并进行细胞计数。

The study was conducted at 25℃ to cryopreserve the Australia Boer goat blastocysts and compacted morulae by one or two-step straw (Experiment 1) and OPS methods (Experiment 2) with vitrification solutions (EFS30, ESF40, EDFS30 and EDFS40) or by slow freezing (Experiment 3) with cryopretectant (1.5 mol/L EG).

在25℃室温下，采用细管法和OPS法，以不同浓度的EFS、EDFS为玻璃化冷冻液，对澳洲波尔山羊致密桑椹胚和囊胚进行玻璃化冷冻保存。同时利用1.5mol/L EG为抗冻保护剂对胚胎进行常规法冷冻保存。

Methods: the cells are isolated by two-step enzyme digestion and purified by the Percoll density centrifugation,the proliferation and differentiation propertiesof which being observed.To study the effect of IGF-1 on satellite cell with MTT method and obtain adequate single satellite cell by frequent passaging.

运用两步酶消化法分离卫星细胞，不连续密度梯度离心法纯化后体外培养，观察其生长与分化特性，运用MTT法测定卫星细胞对不同浓度IGF刺激的反应，并运用频繁传代的方法获取足量单个肌卫星细胞。

The effects on appearance and color and structure of passivating film were studied for various treatments of brass products by two\|step passivation, and the film structure was characterized by using SEM.

介绍了不同处理方式对黄铜制品经二步钝化法处理后形成钝化膜外观、色泽及结构的影响，并通过扫描电镜对钝化膜结构进行了表征。

A strenuous dance performed to quick tempo swing or jazz music and consisting of various two step patterns embellished with twirls and sometimes acrobatic maneuvers .

吉特巴舞一种紧张激烈的舞蹈，伴有快节奏的摇摆或爵士舞曲，由不同的两步舞步组成，并有旋转等装饰性舞步，有时还有特技动作来源：词友

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。