ratio的例句大全

If the molar ratio of acid to dibasic alcohol is 2.2, the quantity of SnO to acid is 2%, and the reaction time is 4 h, the yield of diesters can reach 99%.

在石油酸与二元醇的摩尔比为2.2时，氧化亚锡用量占石油酸用量的2%，反应4h可使二元醇羟基的酯化率达99%。

A procedure on synthesis of nitrophenyl acetic acids with high yield of 100% has been developed catalysed by sodium methylate or ethylate partially instead of sodium phenolate at certain ratio of sodium alkoxide, nitrotoluene and sodium phenolate.

在硝基苯乙酸的合成中，采用醇钠代替部分苯酚钠，可使苯酚钠用量减少50%，产品收率仍可达100%。

The relationship between the shapes of the absorption and photoconductive spectra depends on the ratio of the photocarriers recombination rate in the surface and the bulk of the evaporated film of PcCu.

在PcCu蒸发膜中吸收光谱与光导作用光谱之间形状关系依赖于在表面和本体内光生载流子复合速率的比例。

Sugar cane solution is used as a trial solution in experiment. An evaporative capacity of impinging-stream concentrator is studied by changing inlet air temperature, and the ratio of inlet sugar solution flow rate to inlet gas flow rate and the length of accelerating pipe.

采用蔗糖水溶液作为试验溶液，通过改变空气进口温度、液气质量流量之比、液滴加速管的长度等对撞击流浓缩器（ISC）的蒸发能力进行了研究。

The characteristics of current-linear-amplifier of AC exciter means that the ratio of excitation currents of main generator and exciter is constant, independent on load and temperature.

着重研究了恒速情况下交流励磁系统的电流线性放大器特性的实现问题。

In extensional fault, there are a lot of fluid inclusions with bigger size of grains and wider range ratio of vapor to liquid.

张性断裂流体包裹体数量多，粒径大，气液比变化范围大，常伴随出现沸腾包裹体群；

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

5%氢氧化钠浸提液体积比1：4；

Computer Simulation of Extravehicular Activity Based on Torque Ratio Optimization

基于力矩比优化的航天员舱外活动仿真

Mode, natural frequency and damping ratio of test results are obtained.

得到了复合墙板的振型、固有频率和阻尼比等试验结果。

Measurement of natural frequency and damping ratio of suspension

汽车悬挂系统固有频率与阻尼比的测定试验

From the response curve, the dynamic performance indexes are obtained, including the natural frequency and damping ratio.

用冲击响应法和阶跃响应法对腕力传感器进行了动态标定，计算出了传感器的固有频率和阻尼比等动态性能指标；

Analyzing the transfer function, it shows that the gain factor, natural frequency, damping ratio are key factors affecting the system performance.

通过传递函数分析可知，决定系统的主要性能参数有增益、固有频率、阻尼比等。

Research on analytical methods of embedment effect on stiffness and damping ratio for machine foundations

埋置动力机器基础地基刚度和阻尼比分析方法研究

Azo-dyes with High Dichroic Ratio for LCD

液晶器件用高二向色性偶氮染料的研究

Dynamic sintering and digest of crude material with low al/ si ratio& its test

低铝硅比生料动态烧结和溶出试验研究

The rule of hook load and friction coefficient is applied to enhance predictive accuracy of frictional drag in new area or different BHAs and heighten utilization ratio of frictional drag. Drag theory can be combined with practice, and drill string mechanics analysis system is supplemented.

利用钩载和摩阻系数的规律性，能够提高新区块或者不同钻具组合摩阻预测的准确性，增强现场施工摩阻的利用率，达到理论结合实际，丰富完善钻柱力学分析体系的目的。

The BChE was purified to electrophoretic homogeneity by salting out, ion-exchange chromatography on DEAE-cellulose and gel filtration on Sephadex G-200. Finally the enzyme was purified 278. 5 folds and the enzyme activity recovery ratio was 17.8%.

该酶经过两次硫酸铵盐析、DEAE-52离子交换层析和Sephadex G-200凝胶过滤层析后，其比活力由21.5U/mg提高到5944.1U/mg，纯化278.5倍，回收率为17.8%，达到电泳纯。

Experiment of batch dissolved air floatation shows that the key factors which influences the oil removing capacity of BCAC are the alkalinity and the mol ratio of Fe/ Al and the dosage of the chemical.

间歇溶气气浮试验结果表明：影响改进型复合碱式氯化铝除油性能的主要因素是碱化度B，其次是铁铝摩尔比和投量。

Differentiated squamous cell carcinoma, non keratinized is the most common types in 25 kinds of malignant tumors, the ratio of carcinoma and sarcoma is 11.98 to 1;

恶性肿瘤25种，癌和肉瘤之比为1198∶1，以分化型非角化鳞状细胞癌最多见；

The emissions of isoprene,α-pinene and β-pinene from soil are very small, with the ratio of 0.2%, 0,3.0% to a fixed ACSP at similar solar visible radiation and leaf temperature, respectively.

土壤异戊二烯、α蒎烯、β蒎烯等的排放很小，分别占相近可见光辐射和温度条件下固定羊草样地排放的0.2%、0、3.0%。