substitution principle

Substitution of Asbestos Gasket and Selection of Non-Asbestos Gasket in Daya Bay Nuclear Power Station;

大亚湾核电站石棉垫片的替代和非石棉垫片选型

Effects of substitution of live prey by microdiet on growth,survival and activities of digestive enzymes of larval Pseudosciaena crocea;

微粒饲料替代生物饵料对大黄鱼稚鱼生长、存活和消化酶活力的影响

Substitution of Networked Electronic Journals for Printed Text:A Strategic Study;

网络电子期刊替代印刷文本的决策研究

The influence of Be replacement for Al on the glass forming ability(GFA)and primary crystallization of Al85Gd7Ni8alloy was investigated.

25)85Gd8Ni7,合金表现出最佳的玻璃形成能力和力学性能;一定的Be替代Al(x=0。

Choice and Replacement of Bottom Apron in Spunlaced Nonwovens Production;

水刺法非织造布生产中托网帘的选用与替代

A new kind of tracheal replacement: tissue-engineered trachea;

气管移植研究中的新型替代物——组织工程化气管

An analysis of refrigerant replacement and relevant problems;

制冷剂的替代及相关问题分析

Experiment and research on 18Cr2Ni4 WA steel is substituted by 18CrMnNiMoA steel;

18CrMnNi MoA钢替代18Cr2Ni4 WA钢的试验研究

The application of α-trichloroethane substitute technical and solvent in cleaning industry;

清洗行业α-三氯乙烷替代溶剂及替代技术应用

The Run OfHousehold:Unsubstituted Organization Form Of AgricuItre;

家庭经营:不可替代的农业生产组织形式

Technical study of natural gas replaces acetylene;

天然气替代乙炔技术的研究

On Sustainable Livelihood Development of Peasant in Replacement Livelihood:Case Study of the four counties of northwest in Shanxi;

替代生计对农民可持续生计影响的研究——以山西西北四县为例

The Discovery of Plasmalemma phisiological Replacement;

质膜生理性替代现象的发现

Alternative Fuel DME to Diesel Fuel;

柴油的替代燃料—DME

Research on neo-liberal globalization and the "alternative"issue;

新自由主义的全球化与“替代”问题研究