Fundamental requirements of excitation systems medium and small synchronous machines 中小型同步電機(jī)勵磁系統(tǒng)基本技術(shù)要求
Carry out in china as this system medium ceaseless and perfect , be sure to produce far - reaching effect to phylogeny of world endowment insurance 隨著該制度在中國實踐中的不斷完善,必將對世界養(yǎng)老保險發(fā)展史產(chǎn)生深遠(yuǎn)的影響。