1) Radix-4
基四
1.
a General Implementation of Viterbi Algorithm with Radix-4;
一种通用的基四Viterbi算法的实现
2.
Radix-4 algorithm is adopted in this article.
本文所设计的Viterbi译码器采用了基四算法，与基二算法相比，其译码速率在理论上约提升一倍。
2) four basis
四基
1.
Mr shi who is The head of the development team for the < Compulsory Education Course Standard of Country Mathematics >,and the schoolmaster of Northeast Normal University first proposed the“four basis of the mathematics teaching”when he did this work.
《义务教育国家数学课程标准》修定组组长、东北师大校长史宁中教授在课标修订过程中提出了“数学教学的四基”。
3) tetrabutyl tin
四丁基锡
1.
Using a composite solvent instead of ether, the crude tetrabutyl tin [TBT, (Bu)4Sn≥85%, (Bu)3SnCl≤15%) by SnCl4 through the Grinard reaction, then reacts it with SnCl4 in presence of catalyst.
用复合溶剂代替乙醚作溶剂,通过格氏反应由四氯化锡制得粗四丁基锡(简称TBT),四丁基锡含量≥85%,三丁基氯化锡含量≤15%,将粗TBT与四氯化锡在催化剂的作用下反应,反应完毕后,将反应物用酸洗,分相制得粗二丁基氯化锡,再减压脱水制得精二丁基氯化锡,二丁基氯化锡和氢氧化钠反应制得二丁基氧化锡,以SnCl4为原料合成二丁基氧化锡的小试收率以含锡量计为95。
2.
The grafting reaction of tetrabutyl tin(SnBu_4)on surface of Pt/HY molecular sieve supercages was studied in vacuum.
研究了真空条件下四丁基锡(SnBu4)在Pt/HY分子筛超笼表面的接枝反应,并用元素分析、ICP、GC-MS、XRD、FTIR、TG、BET、UV-Vis等方法对产物的组成、结构和性质进行了表征。
4) Si'te base liquor
四特基酒
5) tetramethylurea
四甲基脲
1.
Solvent Effects on Raman Spectroscopy of 1,1,3,3-Tetramethylurea in Organic Solvents
拉曼光谱方法研究1,1,3,3-四甲基脲的溶剂效应
6) Tetrabutyltin
四丁基锡
1.
Grafting Reaction of Tetrabutyltin on the MCM-41 Surface and Characterization of the Grafted Product;
四丁基锡在MCM-41表面的接枝反应及其产物表征
2.
This paper introduces the method of producing organotin and the Grignard method of preparing tetrabutyltin.
介绍了有机锡化合物的制备方法及格利雅法制备四丁基锡的原理;对传统的格利雅法合成四丁基锡工艺进行了改进,并报道了其半工业试验的效果。
补充资料：-(2-羟乙基)-四氟乙烯的均聚物与柠檬酸、1,6-二异氰酸根合己烷反应物
CAS：68891-05-4
中文名称：α-氟-ω-(2-羟乙基)-四氟乙烯的均聚物与柠檬酸、1,6-二异氰酸根合己烷反应物
英文名称：Ethene, tetrafluoro-, homopolymer, .alpha.-fluoro-.omega.-(2-hydroxyethyl)-, citrate, reaction products with 1,6-diisocyanatohexane
tetrafluoro-ethen homopolymer, alpha-fluoro- omega -(2-hydroxyethyl)-ethen citr； ate, reaction products with 1,6-diisocyanatohexane
ethene, tetrafluoro-, homopolymer, alpha-fluoro- omega-(2-hydroxyethyl)-, citrate, reaction products with1,6-diisocyanatohexane
Ethene,tetrafluoro-,homopolymer,.alpha.-fluoro-.omega.-(2-hydroxyethyl)-,citrate,reaction products with 1,6-diisocyanatohexane
中文名称：α-氟-ω-(2-羟乙基)-四氟乙烯的均聚物与柠檬酸、1,6-二异氰酸根合己烷反应物
英文名称：Ethene, tetrafluoro-, homopolymer, .alpha.-fluoro-.omega.-(2-hydroxyethyl)-, citrate, reaction products with 1,6-diisocyanatohexane
tetrafluoro-ethen homopolymer, alpha-fluoro- omega -(2-hydroxyethyl)-ethen citr； ate, reaction products with 1,6-diisocyanatohexane
ethene, tetrafluoro-, homopolymer, alpha-fluoro- omega-(2-hydroxyethyl)-, citrate, reaction products with1,6-diisocyanatohexane
Ethene,tetrafluoro-,homopolymer,.alpha.-fluoro-.omega.-(2-hydroxyethyl)-,citrate,reaction products with 1,6-diisocyanatohexane
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条