volume ratio

Platelet-rich plasma gel was prepared by compounding platelet-rich plasma and bovine thrombin solution in the volume ratio of 6 to 1. ④ The prepared platelet-rich plasma gel was lyophilized, and then was observed grossly and by scanning electron microscopy.

制备富含血小板血浆凝胶：将富含血小板血浆与牛凝血酶溶液按体积比6∶1充分混合为凝胶。④冻干及观察：将富含血小板血浆凝胶冻干，进行大体观察和扫描电子显微镜检查。

Dead space/ tidal volume ratio change during exercise in patients with COPD

慢性阻塞性肺病患者运动中生理死腔与潮气量比值变化

And then the free vibration, the throttle orifice diameter and the volume ratio between the two attaching gas chambers of air spring with series double attaching gas chambers are researched in detail by the numerical simulation method.

以此为基础，利用数值计算的方法对串联双附加气室空气弹簧的自由振动、节流孔大小及两附加气室容积比对弹簧的影响进行了细致研究。

Because nanofibers have several useful properties including small diameter, high surface area to volume ratio and high porosity, they can be used such as filter membrane, wound dressings, tissue engineering and biomedical engineering extensively.

由于纳米纤维具有许多特性，例如纤维纤度细、比表面积大、孔隙率高，因而具有广泛的应用，如用作过滤膜、伤口包覆材料和组织工程支架及其它生物医用材料。

Effects of Volume Fraction and Diameter thickness Ratio of Flake Reinforcements on Performance of Friction Composites

片状增强体含量及形态对摩擦材料性能的影响

We recommend 1:4 volume ratio between ZT glue and 13 II-iodinated oil.

推荐使用ZT胶与碘化油的体积比为1:4.

By self-made static testing device of common micro-electrolysis, a group of static experiments were designed and fulfilled based on the four factors: volume ratio of iron slag and coke, optimum pH value setting under the acid and alkaline conditions, and optimum reaction period.

利用自制的普通微电解静态试验装置，以废铁屑与焦炭用量比，调溶液酸、碱pH值和反应时间4个因素设计进行了一组静态试验。

In this paper, the effects of steel fiber on the strength enhancement of concrete are studied based on the experiment of cube crushing strength with 30 test blocks in different volume ratio.

本文通过对不同钢纤维体积率的30个立方体试块进行抗压强度试验，分析了钢纤维对普通混凝土的增强作用。

A method of the determination of the precipitability of polycaprolactam was established, using phenol-alcohol-water ( volume ratio 2 ∶ 1 ∶ 1) as the solvent and acetone as the precipitant.

关於聚己内醯胺沉淀度的测定，作者建立了以苯酚-乙醇-水（2∶1∶1）为溶剂、丙酮为沉淀剂的方法。

The homogeneous model results show that the tritium breeding ratio would reach 1.20 for Be and Li_4SiO_4 volume ratios from 2 to 6. A realistic, sandwich-type design of the Be and Li_4SiO_4 loadings was used for a geometric approximation of the optimized volume ratio.

根据均匀混和模型的结果，在Be和Li4SiO4的体积比为2至6之间，氚增殖率最大可达1.20。

This paper studies performance of modified asphalt mortar changing with volume of modifier and filler-asphalt ratio by performing the high-temperature penetration test and low-temperature creep test.

为了研究矿粉对沥青老化性能的影响，采用旋转薄膜烘箱试验模拟胶浆的老化，测试了不同老化状态时沥青胶浆的高、低温性能。

The results of the experiment show that the optimum conditions ( the temperature is 50 ℃, lasted time is 3 hours, the volume ratio of mixed solution and aurum is 6 ∶ 1) are determined;

实验结果表明：较适宜的溶样条件为温度50℃，溶样时间为3h，混合溶剂与金的液固比为6∶1（体积比）；

A tritium breeding ratio of 1.158 was obtained for a 2 ∶ 1 Be and Li_4SiO_4 volume ratio in the front part, which satisfies the tritium self-sufficiency condition for the fusion reactor.

因此，采用Be和Li4SiO4夹层布置，在几何上逼近最优体积比，选择前端Be和Li4SiO4体积比为2时，氚增殖率达到1.158，能够较好地满足聚变运行的氚自持条件。

Addition of x volue reduces the crystal axis ratio a/ c and the volume of tetragonal structure. As a result, it extendes the tetragonal antiferroelectric field that can transform into rhombohedral ferroelectric phase by electric field.

x增加，反铁电四方相的晶轴比a/c和晶胞体积减小，结果是扩大了可以发生电场诱导反铁电-铁电相变的反铁电相区。

Surface to volume ratio is directly related to particle size.

表面积与体积的比与粒子的大小有直接关系.

In order to evaluate these two equations, they ase compared respectively with other taper equations and volume ratio equations in use, using data of Chinese fir ( Cunninghamia lanceolata Hook) stands. Results show better effectiveness of these two equations than others.

为了评价这两个方程，利用杉木材料分别与其它已有削度方程和材积比方程作了比较，结果表明这两个方程的效果较好。

Solvent effect and volume shrinkage ratio in melamine-formaldehyde gel aging process were discussed.

介绍了三聚氰胺 - 甲醛凝胶老化过程的溶剂效应及其对体积收缩的影响.

The thesis explore extract kinetics and extract mechanism for extracting vanillin with mixed mellow ( butanol: propanol, volume ratio is 7:3) fundamentally, confirming extract velocity equation and reaction series.

本论文对体积比为7：3的正丁醇和异丙醇组成的混合醇萃取香兰素过程的萃取动力学及萃取机理进行了初步研究，确定了萃取速率方程及反应级数。

The growth cells of YZ-1 reduce 26. 68% of sulfur concentration in diesel oil when volume ratio of oil and water is 1: 6 in 120 hours.

YZ-1菌株在油水体积比为1：6时，活细胞培养120h对柴油的脱硫率为26.68%。

Use Variable Volume Ratio Control in Screw Compressor for Ice Thermal Storage Application

采用可变内容积比技术的螺杆压缩机在冰蓄冷空调系统中的应用

Both the dry weight and wet weight are the lightest while the medium is composed of carbonized saw dust and yellow soil in volume ratio 2 to 1 and they are 40.9 g and 52.1 g per container respectively.

以容积比为2∶1的炭化木糠+黄心土基质的平均每扦插杯干重和湿重都最轻，分别为40.9g和52.1g；

Objective. To compare direct measures of postoperative hematoma volume against a new measure of hematoma effect on the thecal sac: the critical ratio.

目标：比较术后直接测量血肿体积与一个新的血肿对囊壁作用标度（标准比）的差别。

Anhydrous alcohol and glacial acetic acid were used as component solvent, which the volume ratio was 2 ∶ 1, zinc dust as reductant, reaction temperature was 25~ 35 ℃, reaction time was 2 h, the yield was 81%.

在还原反应中采用无水乙醇和冰醋酸的混和溶剂，两种溶剂的体积比为2∶1，以锌粉为还原剂，反应温度为25~35℃，反应时间为2h，产率为81%。

The optimum MAE conditions for 4 g dry sample are as follows: adding 3 mL water, then adding 30 mL chloroform acetone ( volume ratio 2 ∶ 1), microwave heating for 9 min.

鳗骨油微波萃取的最佳条件为：干样品加水3mL，以氯仿丙酮（体积比为2∶1）为混合萃取溶剂，微波辐照时间9min。

Evaluations are also made on taper equations and volume ratio equations being compared.

另外对所比较的削度方程和材积比方程作了评价。

The volume ratio of 5% hydroxyl sodium: extracting solution 1:4;

5%氢氧化钠浸提液体积比1：4；

Arterial-end-tidal PCO_2 Difference and Dead Space/ Tidal Volume Ratio in COPD Patients

慢性阻塞性肺病患者动脉血一潮气末CO2分压差与死腔/潮气容积比较

The unique reverse structure was also put forward. ( 2) The processes and methods of calculating wall-attachment radius, wall attachment distance varied with the offset ratio were derivated using Attachment Point Model and Control Volume Model respectively.

分别使用附壁点模型与控制面模型，推导出附壁半径，以及对应各种位差时的附壁距离的计算过程和方法。

Based on sandstone pore throat model to study inherent regularities among sandstone throat pore diameter ratio, throat pore volume ratio and throat pore coordination number.

根据砂岩孔喉模型，研究砂岩孔喉直径、孔喉体积比、孔喉配位数之间内在的规律。

The theoretical equation of calculating air-fuel ratio according to the volume fraction of CO_2 CO O_2 NO_ x HC of combustion products is deduced.

推导了由测量得到的燃烧产物中CO2、CO、O2、NOx和HC的体积分数计算燃料空气混合气空燃比的计算公式。