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1)  modified R F
改良RF
2)  improvement [英][ɪm'pru:vmənt]  [美][ɪm'pruvmənt]
改良
1.
Reprocessing for Wheat Variety Characters and its Quality Improvement;
种性加工与小麦品质改良
2.
Correlation analysis and improvement of the quality of processing and appearance in hybrid early indica rice;
早籼杂交稻稻米加工品质与外观品质的相关分析和改良途径
3.
Improvement and evaluation of gastric lavage with electric gastrolavage machine;
电动洗胃机洗胃法的改良与评价
3)  improved [英][im'pru:vd]  [美][ɪm'pruvd]
改良
1.
Clinical Analysis of Improved Trabeculectomy in 160 Cases;
改良小梁切除术160例临床分析
2.
Improved crescent section for correction of epicanthus;
改良新月形去皮法矫正内眦赘皮
3.
Application of improved percutaneous dilational tracheostomy in neurological surgery;
改良经皮气管切开术在神经外科的临床应用
4)  improve [英][ɪm'pru:v]  [美][ɪm'pruv]
改良
1.
Clinical application of improved mandibular growth advancer;
改良下颌生长促动器的临床应用
2.
Advances of studies on genetic engineering improve the quality of ornamental plant;
基因工程对改良观赏植物品质的研究进展
3.
Adaptability Improvement of Pob 43 Maize Populations;
Pob43玉米群体的适应性改良
5)  modified [英]['mɔdɪfaɪ]  [美]['mɑdə'faɪ]
改良
1.
Clinical analysis of 140 cases of modified extraperitoneal cesarean section;
改良式腹膜外剖宫产140例临床分析
2.
Treating Ptosis by Modified Frontalis Muscle Suspension Surgery;
改良额肌瓣悬吊术治疗上睑下垂
3.
Modified excision of choledochal cyst and Roux-Y hepaticojejunostomy in treatment of children with congenital choledochal cyst.;
改良式囊肿切除肝总管空肠Roux-Y吻合术治疗小儿先天性胆总管囊肿
6)  Reform [英][rɪ'fɔ:m]  [美][rɪ'fɔrm]
改良
1.
Regularities of Soil Nutrient Changing and Reformation Measures of Arable Lands in Zhangye City from 1980 to 2004;
1980-2004年张掖市耕地土壤养分变化及改良措施
2.
On the Reform and the Revolution at the End of Qing Dynasty——in Commemoration of the 90th Anniversary of the Revolution of 1911;
试论清末改良与革命——纪念辛亥革命90周年
3.
Why has modern China undergone the evolvement from reform to revolution? This is the key question we must clarify in the teaching course of Compendium of Modern/Contemporary Chinese History.
改良与革命是近代中国在历史道路选择上的分歧焦点所在。
补充资料:Rf-COOH-Rf-SO3H 
分子式:
CAS号:

性质:又称全氟羧酸-磺酸复合离子膜  Rf-COOH-Rf-SO3H  电解食盐水溶液离子膜电解槽所用的膜材料之一。使用时,将较薄的羧酸层面向阴极,较厚的磺酸层面向阳极,因而兼有羧酸膜和磺酸膜的优点。由于Rf-COOH层的存在,可阻挡氢氧离子返迁移到阳极室,确保了高的电流效率(96%),因Rf-SO3层的电阻低,能在高电流密度下运行,且阴极液可用盐酸中和,产品氯气中氧含量低,氢氧化钠浓度可达33%~35%。可在全氟磺酸膜上涂敷一层全氟羧酸的聚合物,或是将磺酸膜和羧酸膜进行层压,或是采用化学方法处理而制得的复合膜。现以采用化学方法处理者质量最佳。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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