常見例句Especially, thepresence of Sn in TiO_2-SnO2-SiO2 catalyst promotered the selectivity to DPO. 經(jīng)Sn改性后的復合型TiO_2-SnO2-SiO2催化劑,使DPO的選擇性明顯提高。Compared with those in two groups, the PaO 2 and(A a)DpO 2 have no difference in preoperative period ( P >0.05). 術(shù)前治療組和對照組PaO2 和 (A a)DpO2 無明顯差異 (P >0 .;0 5 )TS-1 catalyst showed high selectivity of MPO and DPO during transesterification of DMO with phenol. TS-1在催化DPO合成反應中表現(xiàn)出良好的選擇性,弱的L酸中心是DPO合成反應的活性中心。The design of a Digitally Programmable Oscillator (DPO) is described for applications in the area of FSK modulator. 介紹了一種可用作FSK調(diào)制器的數(shù)字可編程振蕩器(DPO)的設計。The dpo conversion control can track currentwithout any error in steady state, but it need complex computation. dpo變換方式可以作到無穩(wěn)態(tài)誤差跟蹤,控制精度高,但控制涉及到復雜的變換。Accordingly,TiO_2-SiO2 catalysts showed high selectivity to target products, DPO. TiO_2主要以Ti-O-Si鍵的形式存在,表現(xiàn)出更多的弱酸性,因而有利于DPO選擇性的提高。 返回 DPO