查询词典 aperture ratio

The effects of the ratio of water and the sample, extracting temperature, extracting time, and the sample particle size on water-soluble active ingredients of Ampelopsis grossedentata were investigated with single factor and orthogonal experiments as a measure of total flavones and water extraction ratio.

以水溶性活性成分总黄酮和水浸提率作为衡量浸提效果的评价指标，分别采用单因素和正交实验L9(34)确定了茶水比、浸提温度、浸提时间和样叶粒度对显齿蛇葡萄总黄酮和水浸提率的影响，得出了影响的主次顺序为茶水比、浸提温度、样叶粒度和浸提时间。

The optimized re action conditions were obtained: the molar ratio of acetic acid and amyl alcohol 1:1.1, the amount of catalyst 0.4g, the reaction temperature about 120℃ and reaction time 3hr, the ratio of...

确定了以该催化剂合成酯的最佳条件：反应温度 12 0℃，酸醇摩尔比为 1∶1.1，催化剂用量为 0 。4 g ，反应时间为 3hr使酸转化率为 86.33%。

The yield of iso amyl propionate was up to 91.8% when molar ratio of isoamyl alcohol to propionic acid was 3.0:1, mass ratio of catalyst was 2.5%, and reaction time was 2.0 hs.

在醇酸物质的量比为3.01，催化剂用量为反应物料总质量的2.5%、反应时2.0h，产品收率可达91.8%。

The angle of every diffraction line of ZSM-5 molecular sieve determinedby X-raydiffraction, we obtained accurate lattice constant by using the least square method, and SiO_2/Al_2O_3 ratio of ZSM-5 molecular sieve according to empirical formula of lattice constant connectedwith SiO_2/Al_2O_3 ratio .

用x射线衍射最小二乘法测定ZSM－5分子筛的晶胞参数，经ZSM－5分子筛硅铝比与晶胞参数关联的经验公式，得到ZSM－5分子筛的硅铝比。

First, for the different molar ratio of two monomers mixtures,the different molar ratio of homogeneous polymer is obtained by choosing the proper condition(the reaction temperature is 60℃-70℃, initiator benzoyl peroxideis 0.1wt%- 0.2wt%)from carrying out bulk copolymerization and its refractive index has been measured respectively by the method of minimum deviation angle.

首先，对不同摩尔比值的两单体混合液，选择适合的工艺条件(共聚温度60℃-70℃，引发剂过氧化苯甲酰0.1wt%-0.2wt%)进行本体共聚反应，获得各摩尔比值下的匀质聚合物；并用最小偏向角法分别测量了由系列匀质聚合物制作的三棱镜的折射率。

The relationship between inter-story torsion angle and torsion deformation ratio is deduced base on the rule of irregular plan structures in China tall building technical specification. Considering the inter-story ratio limitation of different performance levels under different earthquake hazard levels, a series of torsion angle demand curves are established and a new method named as Torsion Angle Capacity Spectrum is put forward for the PBSD of irregular plan frame structures.

从现行规范对平面不规则结构的限制条件出发，推导出了结构层间扭转角与扭转位移比的关系式，结合框架结构在不同性能水平下的层间侧移角限值，建立了平面不规则框架结构在不同地震作用水平下的扭转角需求曲线，提出了扭转角能力谱法。

The cross ratio he called anharmonic ratio.

他把交比叫作非调和比。

At the same time, the channel framework formed by hosts could recognize p -anisaldehyde and form exceptive structural inclusion compound at a molar ratio of 2∶1, which is a supramolecular isomer of inclusion compound at a molar ratio of 1∶2.

同时， 主体分子形成的隧道框架对茴香醛具有识别作用，形成2∶1物质的量比的特殊结构包结物晶体，它是主客体分子物质的量比为1∶2包结物的超分子异构体。

Difference of apeak distribution of dry weight of root in different density treatments. The root shoot ratio was increased gradually during maize growth process, Tendency of root - shoot ratio was displayed slow-fast-slow regular pattern.

根系干重在土壤中的水平分布情况为，不同密度处理根量均呈现以植株中心由内向外逐渐减少的变化。

If a tension overload pluses constant amplitude spectrum, the result shows that the tension overload prolongs the fatigue life, and the bigger overload ratio is, the more apparent the effect of magnitude ratio is, and the effect of prolonging life is decreased with the corrosion extent increasing.

实验结果表明，在等幅载荷谱前加上一个拉伸超载，并定义该超载值与等幅载荷谱的峰值比为超载比，那么超载比越大，超载对无裂纹试件的增益作用越明显，但在超载比一定的情况下，超载的增益作用由于腐蚀程度的增加而降低。

Some of them were ligated to the plasmid vector pCR 2.1 andsequenced,respectively.

将所获DNA片段克隆到pCR2.1载体进行测序，并与基因组数据库进行同源性比较。

Thinking since Google owns Blogger, I would be able to escalate this issue to the support team.

自谷歌的思考拥有Blogger的，我将能够缓解这一问题的支持团队。