perennial river 中文意思是什麼
perennial river
解釋
常流河；常年河-
The completion of the works is a remarkable milestone in relieving the residents of the north district from the perennial flooding menace. the five - year river training works, with a total cost of 1. 2 billion, have upgraded the capacity of the river channels to cater for one in 50 year rainstorms
拓展署完成新界北區梧桐河盆地的治河工程，將河道提升到五十年一遇的排洪能力，整套治河工程總共耗資十二億港元，施工期歷時近五年多。 -
After analyzing and dealing with the data of the perennial precipitation and surface water, qianjiang district was divided into four main regions, and tow sub - regions. the four main regions are the water storage and irrigation region in the northwest, the synthetical irrigation region along the bank of apeng river, the storage and diversion irrigation region in the southwest and the forest water storage region. and the forest water storage region was divided into two sub - regions, the forest water storage sub - region in bamian mountain and the forest water sub - region in the northeast
通過對黔江區多年降雨資料及地表水資源數據進行分析整理，將全區按水資源狀況分為四個大區二個亞區，即西北蓄水灌溉區是嚴重乾旱地區、阿蓬江沿岸綜合灌溉區、西南蓄引分散灌溉區和森林涵蓄區，其中森林涵蓄區包括八面山林涵蓄區以及東南森林涵蓄區兩個亞區。
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