查询词典 subsistence agriculture

In many systems of permanent subsistence agriculture, domesticated animals play an important role.

在许多固定的自给农业系统中，家畜起着重要的作用。

We moved from foraging and subsistence agriculture to the development of crafts and trade.

我们从食物和生计农业，发展到手工业和贸易。

This can have serious consequences for many counties where people are dependent upon subsistence agriculture.

这将对高度依赖农业生产的国家产生严重的影响。

Its traditional 27 is based on forestry, animal husbandry and subsistence agriculture.

不丹王国的传统27。经济是以林业、畜牧业以及自给的农业为基础。

In the absence of barter economy, the economy might have ground to a complete halt and deteriorated to subsistence agriculture.

在缺乏易货经济，经济有可能地面完全停顿和恶化的生存农业。

Most African economies remain dependent on subsistence agriculture and, hence, the weather.

大多数非洲国家仍然依靠赖以生存的基础农业，所以可以说这些国家都是靠天吃饭。

China and India are, rightly, industrialising and moving hundreds of millions of poor people from subsistence agriculture to the modern economy.

中国和印度正在进行工业化，数以亿计的穷人正在从温饱型农业领域转向现代经济领域。

The basic problem is that the rural economy is still structured around subsistence agriculture, often incapable of dealing with market forces

尽管整体经济数据很乐观，但其背后隐藏的更为复杂的经济形势将可能使经济自由化政策受到严峻的考验。

PNG is changing fast, but the vast majority of the people remain dependent on subsistence agriculture and live in small villages.

在新几内亚境内，有许多不同族群，其语言超过八百种，大约占了全世界所有语言的三分之一。

Subsistence agriculture and livestock rearing occupy most of the working population, although development is hampered by primitive techniques, poor soil and climatic conditions, and a chronic labour shortage.

自给自足的农业和牲畜饲养占大多数的工作人口，但发展也受到原始的技术，在贫瘠土壤和气候条件，和慢性劳工短缺。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。