water supply ratio

用法例句

Causation and countermeasure of low water supply ratio in town of our province;

我省乡镇水厂供水率低的原因及对策

The results show that,as for the same irrigation amount,tuber initiation and bulking stages are the stages of complementary irrigation with the most yield increase and water supply efficiency;using different irrigation amount at the tuber initiation stage,both the yield and water supply efficiency are the largest under the irrigation amount of 3 or 4kg per time per plant.

结果表明:以相同补水量在不同生育时期实施补灌,以块茎形成期和块茎增长期供水效率和产量最大;在块茎形成期以不同补水量实施补灌,在同时满足供水效率最高和产量最大的前提下,以3~4 kg/株的补灌量较适宜。

This paper analyzes the hydrologic characteristic of surface water in Xi′an area by the monthly flow time delay curve and the transcendental probability curve,and evaluates the water supply level in Xi′an city with the water-supply guaranteed rate and the shortage index as the evaluating index,through the joint operations among the reservoirs and the operation without reservoir.

针对西安市严重缺水问题,首先采用月流量延时曲线和月流量超越几率曲线分析了西安地区地表水源的水文特性;其次通过水库群联合仿真调度和无水库调度两种方式为西安市供水,以供水保证率和缺水指数为评价指标,评价西安市供水水平,结果显示:①无水库调节是无法满足西安市的现状用水;②三库联合仿真调度在2030年时,年平均弃水量仍高达2亿m3,说明该区水资源开发还有一定的潜力。