In order to reveal the inherent relation between the sizing properties and modification extent,a series of propionylated starch with different degree of substitution(DS)were prepared using propionic anhydride as esterifying agent through varying the feed ratio of the agent to starch.
采用丙酸酐作为酯化剂,通过改变丙酸酐对玉米淀粉的投料比,制备一系列具有不同取代度(DS)的丙酸酯淀粉,以研究淀粉丙酸酯化变性程度与浆液黏附性能和浆膜性能的关系,并通过与醋酸酯化变性的对比,来评价淀粉丙酸酯化淀粉的上浆性能。
Most commercial sodium carboxymethylcellulose (CMC) products have a degree of substitution (DS) in the range 0.4--0.8.
大多数羧甲基纤维素钠具有0.4～0.8的取代度(DS)。
Preparation of Carboxymethyl Corn Starch with a High Degree(DS=2.20) of Substitution by One-step Carboxymethylation
一次羧甲基化制备高取代度(DS=2.20)羧甲基玉米淀粉
DS, D.S. (degree of substitution)
取代度,置换[程]度
Spread-Sequence Extract Technique for QPSK-DS Signal
QPSK-DS信号中的扩频序列提取技术
A Strategy Study on Distribution Agency of Construction Machinery of DS CO.,LTD;
DS公司工程机械代理制营销策略研究
PDA+LDPC Doubly-Iterative Receiver Based on DS-CDMA Systems
基于DS-CDMA系统的PDA+LDPC双迭代接收机
The old system has been superseded.
旧制度已被取代了。
Detection and Analysis of Ac/Ds Transposon in Transgenic Soybean;
转Ac/Ds转座因子大豆后代的鉴定与分析
A low complexity multi-user detection algorithm in DS-CDMA system
DS-CDMA中一种低复杂度的多用户检测算法
The system of obtaining a guarantor to post one's bail awaits trial in China ancient times to form in Song Dynasty
宋代与中国古代取保候审制度的形成
METHODS: Alcoholic extraction, silica gel, ODS column chromatography and recrystallization were used.
方法:采用工业酒精提取、胶柱层析、DS柱层析和重结晶等方法。
We also deal in the following branded crystal components: CITIZEN, TOKYODENPA, KYOCERA, MURATA,, KDS, CSPXO etc.
兼代售其它品牌：西铁城、京电波、瓷、田、DS、PXO等石英晶体产品。
Transformation of Ds into Rice and the Transposition Analysis in Hybrid Descendants;
转座子Ds的水稻转化及其在杂交后代中的跳跃分析
Palaeoenvironmental Significance of Geochemistry Elements and Grain Size of DS Core Sediments in Xinghua,Jiangsu Province
江苏兴化DS浅孔沉积物地球化学元素与粒度所揭示的古环境意义
MAI suppression algorithm based on adaptive parallel subgradient projection in DS/CDMA systems
DS/CDMA系统中基于自适应并行次梯度投影的多址干扰抑制算法
The system of barter was superseded by the use of money.
以物易物的制度被金钱的使用取代了。
Performance pay can't replance good managent.
业绩工资不能取代良好的管理制度。
EFFECT OF CARBOXYMETHYL STARCH WITH LOW DEGREE OF SUBSTITUTION ON THE ADHESION BEHAVIOR TO TEXTILE FIBERS
低取代度羧甲基淀粉对纤维粘附性能