This method not only considers the fuzziness of water quality classification limit but also enhances the precision and the utilization ratio of information.

该方法不仅注意到水质分级界限的模糊性，而且信息利用率和精度均有较大幅度的提高。

youdao

The PAHs density is far higher than the limit of"environmental quality standard of surface water"which proves that PAHs pollution of the Meiliang bay source water is serious comparatively.

其中梅梁湾水源地水体中苯并（a）芘浓度远高于《地表水环境质量标准》规定的要求，说明梅梁湾水源地受苯并（a）芘的污染较为严重。

youdao

Due to the behindhand economic and natural limit, all the problems about water shortage, water quality safety and non-convenient transportation need be settled immediately.

由于落后的经济自然条件限制，如何妥善解决关于水资源短缺，水质安全保障和不发达的交通问题都是当务之急。

youdao