productivities

Almost all variations in living standards are explained by differences in countries'productivities.

几乎全部的生活水平的不同都可以由生产率的不同来解释.

The approximate solution shows that there is a rectilinearity in the pressure and time semilogarithmic coordinates. And the slope and intercept of line are decided by injection-to-production ratio, injection-production well spacing, the ratio of injection-production thickness, the ratio of injection-production productivities.

注水井压降试井的近似解表明在压力与时间的半对数坐标下呈直线关系，直线的斜率与截距取决于注采比、注采井距、注采厚度比、注采产能系数比等参数。

The growing methods ( transplanting, drilling and broadcast sowing) had no obvious influences on the seed productivities.

种植方式（移栽、条播、撒播）对种子生产能力无明显影响。

The productivities and yield stabilities of six peanut varieties tested at seven sites in the 1987's peanut regional test in Nanchong of Sichuan Province were analysed by the Tai G. C.

本文用Tai模式和方法分析了南充地区1987年区域试验中六个花生品种的丰产性和稳产性。

Global warming affects productivities of plants, and then, the structure and evolution of community.

气候变暖影响植物生产力, 进而影响群落的结构和演化.

Studies on productivities of under-ice vascular Hydrophytes

冰下水生维管束植物生产力的研究

the productivities were lower in oxygen isotope stages 1 and 5 than in stage 2. oxygen isotope stage 3 was a period of high productivity in this area, which was probably related to unstable climate.

该区氧同位素第3期也出现高生产力的情况，可能与当时研究区气候不稳定有关。

in forestlands of yan'an and guyuan, the annual net productivities were low and instable, and stable growth periods did not exceed 40 years.

而延安和固原刺槐林地水分生产力较低且稳定性差，刺槐林稳定生长期不超过40年。

Productivities and economic benefits of the different cultivations way of rice

不同栽培方式水稻生产力水平及其经济效益研究

epq model with exponential time-varying demand and different productivities

一种指数时变需求且生产率不相同的EPQ模型

Based on crop productivity models established, main crop productivities are calculated and key factors impacted on crop productivities are analyzed.

根据建立的作物生产潜力模型，对宁夏西吉县主要作物的生产潜力序列进行了计算，并分析了影响作物现实生产力的主导因子。

Under the A group grazing intensity, the stocking rate and pas-ture utilization was higher, but the yield of pasture and animal productivities were lower.

在A组放牧强度的载畜量水平，草地植物利用率高，植物产量和畜产品产量低；