变频设备 meaning in Chinese

frequency conversion equipment

In the electric power profession , ortho provide automated control system and instruments as well as in the cement profession
在电力行业，昊图提供变电站自动化系统综合保护系统及相应仪表。在水泥行业，昊图提供控制系统、变频设备和仪表。
Today the products used in our country are almost come from abroad , which are expensive and have no property rights of our own
目前国内使用的多数是国外的产品,其价格昂贵,而且没有自主的知识产权。所以,研制我国的高压变频设备势在必行。