1) natural flow
自然量
2) natural variable
自然变量
3) natural quality
自然质量
1.
By using the achievement of agricultural land grading in Foshan City, this paper analyses the relationship between natural quality and utilization level of farmland and its productivity in order to know how natural quality and utilization level of farmland influence its productivity, finding out that the two factors are equally important to the productivity.
利用佛山市农用地分等的成果,通过对水田、旱地自然质量等指数和利用等指数与实际标准粮产量的相关性分析来研究县域内耕地自然质量、利用水平对耕地生产能力的影响。
2.
Production functions about fruit farmland,cropland and vegetable plot were established separately consulting Cobb-Douglas production function and taked the farmers capital,labor in unit area and farmland natural quality as the independent variable and the total output value of concrete lands as the dependent variable.
以北京市平谷区的农用地利用类型为研究对象,以单位面积上农户的资本、劳动投入及土地自然质量为自变量,以总产值为因变量,分别建立果园、大田和菜地的生产函数,对影响土地生产力的自然因素和社会经济因素进行综合分析。
3.
The results show that the different PRC can increase or decrease the natural quality grade, utilization grade index on the whole,but,grade spatial distribution orders of the relative farmland were the same.
该文以上海市崇明区作为研究案例,针对一年两熟区域农用地分等,采用最高产量比法、生产潜力比法、热量比法、市场价格比法、热量—现实生产力综合比法、热量—生产潜力综合比法等6种方法确定产量比系数,并检验不同方法确定产量比系数对农用地自然质量等别和利用等别的影响。
4) natural oil production
自然产油量
1.
The changing regulation of the natural oil production of old wells in some oilfields was investigated.
根据油田老井自然产油量变化规律,建立了一种预测油田老井自然产油量的方法。
6) quantity of natural recognition and memory
自然识记量
补充资料：变量与变量值
可变的数量标志和所有的统计指标称作变量。变量的数值表现称作
变量值，即标志值或指标值。变量与变量值不能误用。
变量值，即标志值或指标值。变量与变量值不能误用。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条