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two step     
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  两步
     Oxygen precipitation in conventional heavily B-doped Czochralski (CZ) silicon (HB-Si) and heavily Ge-B codoped CZ silicon (Ge codoped HB-Si) subjected to single step annealing at 650~1150℃ for 64h or low-high two step annealing(650℃/16h+1000℃/16h and 800℃/4~128h+1000℃/16h) are comparatively investigated.
     通过单步长时间退火(650~1150℃/64h)和低高两步退火(650℃/16h+1000℃/16h和800℃/4~128h+1000℃/16h),研究锗对重掺硼硅(HB-Si)中氧沉淀的影响.
短句来源
     β Acetoxy estra 4,6 diene 3 one was synthesized through the two step process from 19 nor testosterone with overall yield of 57%
     以19-去甲睾丸素为原料,经两步得到17β-乙酰氧基-雌甾-4,6-双烯-3-酮,两步收率达57%。
短句来源
     Protocols for identification of CYP2A6 genotypes with PCR based techniques combined with diagnostic restriction enzyme digestion such as two step and one step PCR RFLP methods have been developed.
     已开发PCR技术结合诊断性限制性内切酶分析 (RFLP)如两步PCR和一步PCR RFLP方法检测CYP2A6基因型。
短句来源
     N,N′DiphenyN,N′bis(3methylphenyl)benzidine (TPD) for organic electroluminescent material was synthesized using diphenylamine as starting material through two step reactions.
     以二苯胺为起始原料,经两步反应合成了有机电致发光材料N,N′ 双(3 甲基苯基) N,N′ 二苯基联苯胺(TPD)。
短句来源
     The 3C SiC film has been deposited on Si substrate via two step HFCVD method with SiH 4+CH 4+H 2 mixed gases as source gases.
     采用 HFCVD技术 ,通过两步 CVD生长法 ,以 CH4 +Si H4 +H2 混合气体为生长源气 ,在 Si衬底上生长 3 C-Si C晶体薄膜。
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  二步
     Preparation of Ultrafine α Al 2O 3 Powders via Two step Calcining Method
     二步煅烧法制备超细α-Al_2O_3粉
短句来源
     Two step PCR Detection of K ras Oncogene Mutation in Lung Cancer:Application to Clinic Diagnosis
     肺癌K-ras基因突变的二步PCR检测及其临床应用
短句来源
     reaction temperture and time were 65℃ and 10min for the two step process.
     二步式工艺第一步的加碱量比 5 0 % ,反应温度 6 5℃ ,反应时间 10min。
短句来源
     EXPLICIT FUNDAMENTAL SOLUTIONS FOR ONE CLASS OF NONHOMOGENEOUS NONTRANSVERSALLY ELLIPTIC DIFFERENTIAL OPERATORS ON THE TWO STEP NILPOTENT GROUP H 2n+1 ×R 2d
     二步幂零李群H_(2n+1)×R~(2d)上一类非齐次非横截椭圆不变微分算子的显式基本解
短句来源
     Ultrafine α Al 2O 3 powders were prepared via a novel two step calcining method XRD analysis showed that the as synthesized powders were α phase, the sizes of the powders were observed about 80~100nm with regular morphology through TEM analysis
     经由二步煅烧法制备了超细α Al2 O3 粉 X R D 分析说明所制备的粉是α相, T E M 观察到其一次粒子尺寸在80 ~100nm 间, 形貌较规则
短句来源
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  两步法
     A "two step" method for separate control of nuclei generation and crystal growth under different conditions was used for the synthesis of a series of ZSM-11 zeolites having SiO_2/Al_2O_3 ratios of 20 to 3400. In the case of "one step" method, the SiO_2/AJ_2O_3 value of the products from the same reaction mixture was confined within the range of 30—320。
     应用控制成核和晶体生长在不同条件下进行的方法(两步法),原料配比不变,定量加入铝,合成出SiO_2/Al_2O_3为20—3400的ZSM-11沸石; 其成核和晶化阶段在同一体系中进行(一步法),产物SiO_2/Al_2O_3在30—320之间。
短句来源
     The synthesis technology of trimethylolpropane from n-butanal and formaldahyde with NaOH catalyst via one step method and with N(C_2H_5)_3 catalyst via two step mathod is discussed.
     阐述了以正丁醛、甲醛为起始原料 ,以NaOH为催化剂 ,一步法合成三羟甲基丙烷和用N(C2 H5) 3 为催化剂 ,两步法合成三羟甲基丙烷的工艺技术。
短句来源
     Aromatic polyureas were synthesized from 4,4′-diphenylmethane diisocyanate and m-phenylene diamine by two step solution polymerization.
     采用4,4′-二苯甲烷二异氰酸酯(MDl)和间苯二胺为单体,经两步法溶液聚合制备了芳香族聚脲。
短句来源
     Acetylated-hydroxylated phosphatide was prepared by acetylation and hydroxylation via two step reaction, the optimum reaction conditions were as follows: m(phosphatide) 5 g, V(n-hexane) 100 mL, acetic anhydride/phosphatide(mass ratio) 3.5%, 30% hydrogen peroxide/phosphatide(mass ratio) 11.6%, reaction temperature 6070 ℃, total reaction time 1.5 h.
     利用两步法合成了乙酰化羟化磷脂,较佳的反应条件为:磷酯5g,正己烷100mL,乙酸酐/磷酯(质量 比)=3.5%,30%H2O2/磷酯(质量比)=11.6%,反应温度60~70℃,总反应时间1.5h。
短句来源
     A new modifier for bismaleimide(BMI),2,4-Bis(2-allylphenoxy)-6-(2-naphthyloxy)-1,3,5-triazine(BAPNPT)was synthesized in two step by reaction of cyanuric chloride,2-alˉlylphenol and2-naphthol.
     以三聚氯氰、2 -烯丙基苯酚和 β-萘酚为原料 ,通过两步法反应工艺合成了一种新型的双马来酰亚胺改性剂2,4 -二(2 -烯丙基 -苯氧基 ) -6 -(2—萘氧基 ) -1,3,5 -三嗪(BAPNPT)。
短句来源
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  两级
     The design is done first in an equivalent lumped circuit model,then how to improve the stability of the circuit and lower the noise figure are discussed,and finally it works out a circuit simulation result of a two step LNA with the working passband 1650M~2350M,the gain G>29dB,the gain flatness GF±1dB,noise figure <0.8dB.
     设计过程首先从等效集总元件电路模型设计入手,然后对如何提高电路稳定性,降低噪声系数等方面进行了探讨,最后给出了工作带宽为1650M~2350M,增益G>29dB,增益平坦度GF±1dB,噪声系数NF<0.8dB的两级低噪声放大器的电路仿真结果。
短句来源
     The paper deals with the structure and properties of 3 80%C,2 46%Si,0 25%Mn,0 026%S,0 036%P,0 051%Mg,0 022%RE ductile cast iron heat treated at higher temperature through conventional austempering,two step austempering or austempering+tempering. It was found that the heat treat processing zone is narrow/disappeared at higher temperature so that the bainitic ductile cast iron without austenite in the matrix can be obtained.
     分别采取普通等温淬火、两级等温淬火、等温淬火 +回火 3种热处理工艺对较高温度下球墨铸铁 (成分为质量分数 % :3 80C ,2 4 6Si,0 2 5Mn ,0 0 2 6S ,0 0 36P ,0 0 5 1Mg ,0 0 2 2RE)的组织和性能进行了研究 ,发现热处理工艺带变窄或消失 ,得到基体中不含奥氏体的贝氏体球墨铸铁。
短句来源
     For (Nd0.8Dyo.2)15Fe62Co15B8, the coercivity lost caused by cracking was certainly restored by two step heat treatment (890℃ × 1 h + 580℃ × 1 h). When an average partical size was about 350 μm, the coercivity reached to 570 kA/m, which is an acceptable level for bonded magnets.
     同时,通过两级热处理(890℃×1h+580℃×1h)使机械破碎造成的矫顽力下降得到一定程度的恢复,在粗破碎平均粒度为350μm时,矫顽力恢复到570kA/m,达到了制备粘结永磁体可以接受的水平.
短句来源
     In view of mechanochemistry,in order to fully activate the potential hydraulic activity of clinker and mineral admixture during hydration,the traditional cement grinding process is changed into two step grinding According to this process, 425 # slag cement containing 70% slag and 425R # fly ash cement containing 45% fly ash are made of 525 # clinker from a shaft kiln.
     利用机械力化学原理,改变传统的水泥粉磨工艺为两级粉磨,充分激发熟料及混合材在水化过程中的潜在活性,并据此用525#立窑熟料试制出了掺70%(质量百分数,以下同)的425#矿渣水泥和掺45%的425R粉煤灰水泥。
短句来源
     SHORT CRACKS GROWTH AND FATIGUE DAMAGE UNDER TWO STEP LOADING
     两级载荷作用下疲劳短裂纹扩展与疲劳损伤
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  two step
Experimental study on ex vivo expanded hematopoietic stem/progenitor in the two step culture from human umbilical cord blood tra
      
The effects of hematopoietic stem/progenitor cells (HSPCs) expanded in the two step coculture with human bone marrow mesenchymal stem cells (hMSCs) on the hematopoietic reconstruction of irradiated NOD/SCID mice were studied.
      
By two step acid-alkali pretreatment and immersing into supersaturated calcification solution, hydroxyapatite (HA) coating was deposited on titanium (Ti) discs.
      
In this study, aerodynamic sound radiated from a circular cylinder in uniform flow is predicted numerically by the following two step method.
      
A two step procedure for the synthesis of a novel family of homogeneous and immobilized Ru-complexes containing Schiff bases as O,N-bidentate ligands is described.
      
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