查询词典 plant cover

For instance, Great Plains grasslands are an endagered biome in North America because of agricultural activity that fragments and reduces native plant cover.

例如，大平原草原是一endagered生物群落在北美地区，因为农业活动的片段，并降低本土植被。

Scientists estimate that a desert needs year round plant cover over 20 to 40 percent of its surface.

科学家估计一年之中植物必须覆盖沙漠表面的20%到40%。

The max-plant cover of sweet potato is 73% which occurs at the earthnut expanding stage.

甘薯的最大覆盖度为薯块膨大期的73％。

And forest soils are saltier and more acidic, compared with other types of plant cover such as crops or grasslands, the researchers found.

并且研究人员发现：森林土壤的盐分和酸性比农田或草原等其它类型植被更高。

Only the project, the double-wall concept, the three-tier glass curtain wall, roof plant cover, sun louvers and reflectors are brought about by the use of new visual impact, change and develop people's sense of aesthetics.

只有项目，双壁概念的三个层次构成的玻璃幕墙，屋顶植被，孙百叶和反光板所带来的使用新的视觉冲击力，改变和发展人民的美感。

In this paper, the cosmogenic 7Be content of different cover materials on the soil surface was analyzed, the results showed that the withered plant cover contained the highest 7Be activity among the incomplete decomposed and the living plant cover in the end of springtime.

本文对不同地被物中的7Be含量进行了分析，结果表明：春季末地表不同地被覆盖物中干枯植物的7Be含量最大，半分解物次之，活植物中含量最少。

Long-term radom exploration has caused great effect to the ecology, the problems such as plant cover destroy, land impropriation, pollution, land subsidance, land collapse, raise in many places, blocking the developing of local economy.

多年来的无序开采，对生态环境造成很大的破坏和影响，出现了山体植被遭受破坏、土地被占用、环境受污染、诱发地面沉降、地面塌陷等一系列问题，已影响到国民经济的发展。随着省人大和省政府关于限制开山采石和保护环境等政策、法规出台和落实，近几年乱采滥挖现象基本得到了有效的遏制。

The result shows that plant height,plant cover and leaf area index vary greatly temporally.

结果显示：作物的高度、覆盖度和叶面积指数随时间变化很大。

Life. Scientists estimate that a desert needs year round plant cover over 20 to 40 percent of its surface.

科学家估计一年之中植物必须覆盖沙漠表面的 20%到 40%。

Scientists estimate that a desert needs year round plant cover over 20 to 40 percent of its surface.

如果灌木间隔太远--大于它们高度的 5 倍--周围的土壤就可能被吹走。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了