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- The 3n ASCC fed in pond can not only rearch sexual maturity ,but be reproduced. 池塘中飼養的雄核發(fā)育異育銀鯽性腺不僅能成熟，而且也能生殖。
- The diamond films doped with boron were synthesized on the Si 3N 4 substrate by microwave plasma CVD method (MPCVD). 采用微波等離子體化學(xué)氣相沉積 ( MPCVD)的方法在 Si3N4 基片上制作了摻硼金剛石薄膜。
- Ultra-thin Si 3N 4/SiO 2(N/O) stack gate dielectric with EOT of 2.1nm is fabricated successfully,and its characteristics are investigated. 成功制備了EOT(equivalentoxidethickness)為 2 1nm的Si3 N4/SiO2 (N/O)stack柵介質(zhì) ;并對其性質(zhì)進(jìn)行了研究 .
- Firstly, native 2N and 3N Gd are used to try to repeat the magnetocaloric properties of GdsSi2Ge2 alloy reported by scientists of Ames Lab (AL). 針對近年來(lái)國際上取得突破性進(jìn)展的GdSiGe系合金，首先以國產(chǎn)2N級和3N級金屬Gd為原料，對Gd_5Si_2Ge_2合金的一級磁相變和巨磁熱效應的重現性進(jìn)行了研究；
- Si?3N?4 has a higher dielectric constant, k, than that of SiO?2. New model and material parameters were added to 2?D device simulator PISCES?II. 使用Si3N4材料作為柵介質(zhì),利用其介電常數高于SiO2的特性,可以在一定時(shí)期內有效地解決隧穿電流的問(wèn)題。
- The Riemann manifold and the Quasi-Riemann manifold are given in 3N dimensional Euclid space and its l-order tangential space respectively. 在3N 維 Euclid 空間及其一階切空間中,分別給定Riemann 流形及準 Riemann 流形。
- It is proved that electroless composite plating Ni P Si 3N 4 on piston ring is a new technology,which is worth application and dissemination. 結果表明：活塞環(huán)化學(xué)復合鍍Ni－P－Si3N4是一種值得推廣應用的新型工藝方法。
- Thermodynamic analyses for the superhard inorganic material, such as SiC, Si 3N 4,TiC,TiN and so on, nanosized powder CVD synthesis processes were made systematically. 通過(guò)熱力學(xué)分析研究了超硬無(wú)機材料，如SiC、Si3N4、TiC、TiN等納米粉末的化學(xué)氣相沉積（CVD）合成反應過(guò)程和核化過(guò)程的有關(guān)熱力學(xué)規律。
- Current research on these materials concentrates on diamond, cubic boron nitri de(cBN), carbon nitride(C 3N 4, CN x), boron carbonitride(BCN)and diamond like carbon(DLC). 新型超硬薄膜材料研究從金剛石開(kāi)始 ;目前主要的研究對象有金剛石、類(lèi)金剛石碳 (DLC)、立方氮化硼 (cBN)、氮化碳 (C3N4 ;CNx)、硼碳氮 (BCN)等 ;是近二十年來(lái)材料研究的熱門(mén)方向之一 .
- Research results show that composite aids are more effective than single aids to sintered Si 3N 4 ceramics, in which the rare-earth oxides and MgO-Al 2O 3-SiO 2 composite aids are more attractive. 研究表明 ,多組分助劑比單一組分助劑對氮化硅的助燒效果好 ,其中稀土氧化物和MgO -Al2 O3 -SiO2 體系比較受重視
- The results showed that, adding P into BN Mg system can obtain crystals without free carbon, while adding LiH and NH 4Cl into Li 3N BN system can obtain CBN crystals of high strength and high thermal stability. 研究表明 ,結晶介質(zhì)成分和合成參數一樣 ,對立方氮化硼結晶的完整性 ,雜質(zhì)成分對晶體特性的影響起著(zhù)重要的作用 ,指出 ,往BN -Mg體系中 ,引入P可培育出不含游離硼的晶體 ,而往Li3N -BN體系中引入LiH和NH4 Cl時(shí) ,所得到的立方氮化硼具有高的強度和熱穩定性。
- On the basis of applying second-order tangential space and Riemann space in 3N dimension Euclid space [4], the writers have derived the integral variati- onal principles in Riemann form for first-order and second-order non- holonomic dynamical systems. 本文在引進(jìn)3N維Euclid基本空間的二階切空間及Riemann空間中,提出一、二階非完整力學(xué)系統的積分變分原理的Riemann形式。
- For sake of probing the possibility of CVD at room temperature by way of laser plasma assisted technique, a new style of CVD device has been designed and manufactured, and was used on practical preparation of Si 3N 4 film from SiH 4 NH 3 N 2 system. 為探索用激光和等離子體共同輔助化學(xué)氣相沉積（CVD）過(guò)程以實(shí)現室溫沉積的可能性，設計并制造了一種新型的CVD裝置，實(shí)際進(jìn)行了由SiH4－NH3－N2體系制取Si3N4膜的試驗。
- The esterfication of 8 with cinnamyl chloride in DMAP,Et 3N gave the esters 9.Acid hydrolysis of the acetone protecting group of 9 in 75% aq. HOAc gave compounds 8-O- cinnamyl-dihydrogoniotriol. 然后化合物 8與肉桂酰氯反應得化合物 9,在經(jīng) 75%25的醋酸水溶液水解得 8-O -肉桂?；?-dihydrogoniotriol。
- The studies of IR and Raman show that there are Si-N ,Si-H,N-H,Si-O-Si bonds in a Si 3N 4.An analysis of Raman spectra of a Si 3N 4 for thermal treatment in various temperature and atmosphere are made. 紅外吸收和拉曼光譜研究表明，a－Si3N4納米粒子中存在Si－N，Si－H，N－H，Si－O－Si鍵，分析了a－Si3N4納米粒子在不同的溫度和氣氛退火后的變化情況。
- Meanwhile,backcrossing females 3n AASCC (F 1- similar to ASCC) to faternal parent 3n=156 ASCC could produce first backcross generation (B 1 ASCC being very similar to faternal parent ASCC). 它與父本異育銀鯽回交可以產(chǎn)生回交子一代 (B1)。 雄核發(fā)育異育銀鯽、回交子一代異育銀鯽與父本異育銀鯽非常相似。
- The fracture surface of the Si?3N?4/Al interface has been analyzed by SEM and EDXA methods,and the results prove that the fracture pattern of Si?3N?4/Al interface belongs to interface brittle debonding. ? 用SEM和EDXA方法研究了Si3N4/Al界面的斷口。 結果表明,Si3N4/Al界面的斷裂模式屬于界面脆性剝離。
- It is a finite impulse response (FIR) digital filter, and its order is N/3(N is the sampling number in a period). The direct current in i P(i Q) can pass through this filter damplessly, while 3n harmonics damp thoroughly. 該濾波器具有線(xiàn)性相位的有限沖激響應 (FIR)數字濾波器 ,階次為N/3(N為一個(gè)周期的采樣點(diǎn)數 ) ,可使iP(iQ)的直流分量無(wú)衰減地通過(guò) ,而 3n次諧波處的幅值衰減為0。
- It is found that if we can keep the enough HRT and special ratio of NO - 3N/NH 3N, the denitrification process can be finished in the aerobiosis segment of the A/O process without refluencing to anoxic segment of the A/O process. 發(fā)現只要保證足夠的水力停留時(shí)間和進(jìn)水中一定的硝態(tài)氮與氨氮比 ,利用膜法A/O工藝的好氧段完全可以滿(mǎn)足脫氮的要求 ,而并不需要回流在A(yíng)段進(jìn)行反硝化作用。
- Meanwhile,backcrossing females 3n AASCC (F1- similar to ASCC) to faternal parent 3n=156 ASCC could produce first backcross generation (B1 ASCC being very similar to faternal parent ASCC). 它與父本異育銀鯽回交可以產(chǎn)生回交子一代(B1)。雄核發(fā)育異育銀鯽、回交子一代異育銀鯽與父本異育銀鯽非常相似。
