Establishing water conservation irrigation garden by irrigated area itself is a new attempt on unified management and comprehensive utilization of the surface water and underground water.

由灌区自行建立节水灌溉园区是灌区地表水、地下水统一管理和综合利用的新尝试。文章就其中的有关问题进行了探讨与研究。

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Catalyst activity was determined by not only specific surface area of catalyst but also the distributions of active center and utilization ratio of internal surface.

催化剂活性不仅与比表面有关，还与其活性中心分布情况、内表面利用率有关。

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Studying on the land surface variables and vegetation variables over inhomogeneous landscape of the northern Tibetan Plateau area, the utilization of satellite remote sensing is indispensable.

卫星遥感在研究青藏高原北部地区(藏北高原地区)非均匀陆表地表特征参数和植被参数时有其独到的作用。

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