例句與造句

1. 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。
2. the aim of this study is to investigate theoretically the possibility for activation of small mammalian myelinated nerve fibers without activating larger ones when stimulating a nerve fiber bundle with a monopolar point electrode using biphasic pulses, which can reduce the electrochemical damage resulted from stimulation pulses to nerve fibers . a simulation system for studying the electrical properties of mammalian myelinated nerve fibers was built based on a simple infinite and homogeneous volume conductor model . by use of an asymmetric but charge-balanced stimulation waveform, the sensitivity of excitation and blocking threshold of nerve fibers to fiber diameter, electrode-fiber distance was calculated . the results show that selective activation of small mammalian myelinated fibers may be possible in a region at some distance from the electrode using biphasic pulses
   本研究的目的是要從理論上探討利用單電極雙向脈沖刺激實現(xiàn)哺乳動物神經(jīng)纖維選擇性刺激，(即當刺激一束神經(jīng)時，不興奮粗神經(jīng)而興奮細神經(jīng))的可能性.雙向脈沖刺激可以降低刺激脈沖對神經(jīng)纖維產(chǎn)生的電化學損傷.為研究哺乳動物有髓神經(jīng)纖維的電特性，建立了一個基于簡單的無窮大、各向同性的容積導體模型的仿真系統(tǒng).利用該仿真系統(tǒng)，采用“不對稱但電荷平衡”的雙向脈沖刺激，計算了神經(jīng)纖維的興奮和阻斷閾值與纖維直徑、纖維-電極間距離的關(guān)系.結(jié)果表明：在距電極一定距離內(nèi)采用該雙向脈沖刺激模式確實可以實現(xiàn)哺乳動物有髓神經(jīng)纖維的選擇性興奮
3. It's difficult to find pointed electrode in a sentence. 用pointed electrode造句挺難的