求翻译：　华北水利水电学院的前身是1951年成立的中央人民政府水利部水利学校；1958年升格为北京水利水电学院；1969年迁入河北省邯郸市办学，1971年更名为河北水利水电学院；1978年更名为华北水利水电学院，1990年迁至河南省郑州市办学。2009年，水利部与河南省政府签署共建华北水利水电学院协议，标志着华北水利水电学院的发展进入了一个新的阶段。是什么意思？

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　The North China water conservation water and electricity institute's predecessor is Central People's Government Ministry of Water Conservation Water conservation School which in 1951 established; In 1958 promoted for Beijing Water conservation Water and electricity Institute; In 1969 moved into the

　The predecessor of North China Institute of water conservancy and hydropower school was founded in 1951, the Central People's Government the Ministry of water resources water conservancy 1958 upgraded to a Beijing College of water conservancy and hydropower; 1969 moved in Handan city, Hebei provinc