the influence of zno on the properties of li2 o-al2 o3-sio2 system low expansi 2系統(tǒng)低膨脹微晶玻璃性能的影響
therefore, in order to improve the system low speed performance, it is necessary to compensate the friction force 因此,要提高電液伺服系統(tǒng)的低速性能,必須對摩擦力進行補償。
power system is a complex dynamic system . this paper concentrates on the research of power system low frequency oscillation based on angle measurement technology 電力系統(tǒng)是一個復(fù)雜的動態(tài)系統(tǒng),其振蕩穩(wěn)定問題一直是電力系統(tǒng)研究的熱點問題。
it describe a real-time data collection, monitoring and control system for electricity use by utilizing existing user-side digital multifunctional electrical meter as data client through gprs network, to make up dsm technical support system low cost using current devices 本論文正是在上述背景下,提出并研究利用用戶側(cè)現(xiàn)有的數(shù)字式多功能電能表作為數(shù)據(jù)采集監(jiān)控終端,通過gprs網(wǎng)絡(luò)實現(xiàn)電力需求側(cè)實時用電數(shù)據(jù)的采集監(jiān)控,低成本地構(gòu)建dsm技術(shù)支持系統(tǒng)。
but its sintering temperature is so high that it cannot be sintered under 1000 with low melting point electrode materials like ag, cu etc . presently investigations about this material are mainly via glass-ceramic technique to decrease the sintering temperature and the dielectric loss is high . for the first time, this investigation manufacture a casio 3 system low dielectric and high frequency microwave dielectric ceramic via tape casting with basic material altered and additives doped 本文以casio_3體系為研究對象,首先對casio_3體系進行改性,并首次采用li_2o和bi_2o_3作為燒結(jié)助劑,降低體系燒結(jié)溫度,在此基礎(chǔ)上,采用catio_3調(diào)節(jié)陶瓷的頻率溫度系數(shù),制備出微波介電性能優(yōu)良的具有工業(yè)應(yīng)用價值的casio_3系ltcc低介高頻微波介質(zhì)陶瓷。