WVS

The WVS ( Water , Vegetation and Soil ) classification and its utilization in the land cover mapping at the regional scale are discussed .

WVS分类（Water，VegetationandSoilClassification）及地面覆被分类图的编制，为区域性生态环境研究提供了重要的基础资料。

Please note that there is no fee for registering with WVS assistance is provided to our associated charities entirely free of charge .

我们对注册的联合慈善组织提供帮助是完全免费的。

WVS Solid-closure High-voltage Vacuum Circuit Breaker 's technical parameters can totally comply with GB1984 , GB / T11022 and China Power Industry Standard DL / T403 , also meet the IEC62271-100 , IEC56 .

WVS型固封式高压真空断路器各项技术参数完全符合GB1984、GB/T11022和中国电力行业标准DL/T403，同时还满足IEC62271-100、IEC56标准规范以及其他主要工业化国家相关标准的规定。