查询词典 ratio

The experimental materials of Notarchus Leachii cirrosus Stimpson were treated with depurated seawater. Then the relative ratio and variation trend of organic to inorganic heavy metal content in various organic tissues of NLCS were revealed and compared, respectively. Results indicate that these ratio parameters are fit for monitoring and evaluating various heavy metals for bringing both pollution level and crisis in flowing seawater.

以蓝斑背肛海兔(Notarchus Leachii cirrosus Stimpson，NLCS)为实验材料，研究NLCS经人工海水净化前后，NLCS各器官组织中有机态／无机态重金属含量相对比值及变化趋势，提出组织细胞中的有机态／无机态重金属比值参数，适合于监测流动海水中各类重金属污染程度及危害性的看法。

The adsorption principles of two resins are both physical adsorption. At the same time, the MN as eluant instead of acid is selected and elution ratio can reach above 96%. 10 circles of the stable experiments show that the resins are stable, and their adsorption ratio could be maintained around 93%.

选择了一种代替酸洗脱的解吸剂MN，简化了解吸过程，无二次污染且解吸率可达96%以上。10次的稳定性实验树脂的吸附率均能保持93%左右。

The percentage of total biomass allocated to roots was positively correlated with WUE for the seven investigated species (r=0.93, p.01). Results indicate that the species investigated are typical C3 plants. These spring ephemerals are characterized by higher P T and lower WUE in comparison with other desert species. The unique biomass allocation of low root/aboveground biomass ratio, higher leaf area ratio, higher leaf mass per unit leaf area, and photosynthetic traits are involved in the physiological mechanisms that contributed to the rapid growth of desert spring ephemerals.

这些结果表明，所观测的早春短命植物具有典型的C3植物特征，相比其它类型的荒漠植物具有较高的单位叶面积P高T及低WUE，并且在生长发育过程中表现出很低的根／地上生物量比、较高的叶面积比和单位叶面积干重，说明它们具有相对高的生长速率，这与其生长发育节律相一致，反映了它们与准噶尔荒漠环境相适应的特点。

The percentage of total biomass allocated to roots was positively correlated with WUE for the seven investigated species （ r = 0.93, p 〈 0.01）. Results indicate that the species investigated are typical C3 plants. These spring ephemerals are characterized by higher Pn, Tr and lower WUE in comparison with other desert species. The unique biomass allocation of low root/aboveground biomass ratio, higher leaf area ratio, higher leaf mass per unit leaf area, and photosynthetic traits are involved in the physiological mechanisms that contributed to the rapid growth of desert spring ephemerals.

这些结果表明，所观测的早春短命植物具有典型的G植物特征，相比其它类型的荒漠植物具有较高的单位叶面积Pn、高Tr及低WUE，并且在生长发育过程中表现出很低的根／地上生物量比、较高的叶面积比和单位叶面积干重，说明它们具有相对高的生长速率，这与其生长发育节律相一致，反映了它们与准噶尔荒漠环境相适应的特点。

The experiment shows that the catalyst portion has very obvious effect on the exhaust purity box ,purity ratio and oil consumption ; In the course of the opening ratio has an less obvious impact on experiment ,the three items ;the least impact on the three items is the carrers diameter.

试验结果表明，催化剂用量对净化消声器的消声量、净化率及油耗三项指标均有显著的影响；穿孔板的穿孔率在试验范围内，对净化消声器的三项指标影响较为显著；载体直径对净化消声器的三项指标的影响次之。

Catalyst dosage ,the particle diameter of catalyst and the opening ratio of the opening piece are to be experimented and analyzed according to the three items of purity of exhaust purifying box .Exhaust muffler and oil consumption .The relationship between the paramefers and exhaust parity exhaust noise and the oil consmption ratio is analyzed the effecting degrie.

针对尾气净化消声器的净化、消声及油耗三项指标，选取了催化剂用量、催化剂的颗粒直径、开孔板的开孔率三个主要影响因素进行了正交试验和分析，探讨了这些参数和尾气净化、排气噪声、油耗率之间的关系及其影响程度。

The two feasible engineering application curves are given which curve pc*=f1,optimum combustion chamber Pc* versus nozzle expansion ratio ε and curve ε*= f2, optimumnozzle expansion ratio ε versus combustion chamber pressure Pc resoved by iteration method.

用迭代法求解，给出了两条工程上行之有效的曲线──最佳燃烧室工作任强随喷管膨胀比ε的变化曲线和最佳喷管膨胀比ε*随燃烧室工作压强pc的变化曲线。

On the basis of summarizing separation method of acetic acid-water system, we studied the azeotropic distillation process of acetic acid-water system, selecting butyl acetate, isobutyl acetate and isopropyl acetate as entrainers. The influence of packing height, ratio of water to entrainer and acetic acid initial concentration to separation effect of azeotropic distillation was studied in detail. Simulation calculations of general distillation and azeotropic distillation were carried out. The influence of reflux ratio, theoretical plate, feed position, feed temperature and feed concentration to distillation process were discussed. Preferred process operation parameter, which had guiding meaning to practical production of distillation process were obtained. Basic data for the process amplifying design of azeotropic distillation tower were provided. Invest and operation energy consumption of two distillation methods were compared. The elementary technical design of azeotropic distillation tower was carried out on the basis of result of simulation calculation. The type of major auxiliary equipments and inner parts of packed tower were selected.The research results are as follows:(1) Butyl acetate, isobutyl acetate and isopropyl acetate could be selected as entrainer, and separation effect was near.

本文在综述醋酸-水体系分离方法的基础上，以醋酸丁酯、醋酸异丁酯、醋酸异丙酯为挟带剂，对醋酸水溶液进行共沸精馏过程研究，详细研究了填料高度、水与挟带剂的配比、醋酸初始浓度等对共沸精馏分离效果的影响；对醋酸-水体系进行普通精馏和共沸精馏过程模拟计算，讨论了回流比、理论板、进料位置、进料温度和浓度对精馏过程的影响，获得了对醋酸-水体系精馏过程实际生产具有指导意义的较佳的工艺操作参数、共沸精馏塔的工艺设计放大的基础数据，并对两种精馏方法的投资、操作能耗进行了比较；同时在共沸精馏模拟计算的基础上进行了共沸精馏塔的初步工艺设计计算，并对填料塔的主要辅助设备及塔内件进行了初步选型。

The third part is to analyze the gender preference of peasants in village N, S and village B based on the data of fieldworks and SPSS. It is found that, without taking the birth control into consideration, son preference ratio of peasants in village N, S is 24% higher than that of village B. Suppose that only one child is allowed in one family, son preference ratio of peasants in village N, S is about 40% higher than that of village B.

研究发现，在不考虑胎次的情况下N、S两村农民的偏男系数比B村高24%，在假设只能生育一孩的情况下，N、S两村农民的偏男系数比B村高出将近40%；在生育行为方面，N、S两村农民明显偏好男孩，B村农民没有性别偏好；在孩子的抚育方面，N、S两村农民与B村农民没有显著性差异，均没有偏好男孩的表现。

MWM engine makes the conversion among two-stroke mode, four-stroke mode and six-stroke mode of one engine come true in theory, filles in the blank with 1/3 which is the ratio of total strokes to working strokes in single working cycle of engine, possessing the continuous variable compression ratio of a certain range at the same time, combines the advantages of two-stroke engine and four-stroke engine, expandes the working range of engine greatly.

MWM发动机在理论上实现了一台发动机在二冲程、四冲程与六冲程工作模式之间的相互转换，填补了发动机单工作循环作功行程数与总行程数比值中1/3的空白，同时具备一定范围连续可变的压缩比，整合了二冲程与四冲程发动机的优点，拓展了发动机的工作范围。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷