Comprehensive comparison between nuclear power system and fossil-fired power system by port side an initial inquiry on urgent need and the feasibility of gradually carring out the substitution of nuclear for coal in Fujian Province 核电系统和港口火电系统的综合比较&初探在福建逐步实行以核代煤的迫切性和可能性
This paper discusses the estimating method of side length surveying with EDM ( electronic distance measuring), applying the method of equal-weight substitution to estimate mean square error of the weakest boundary point. 本文研究了用EDM(电子测距)边长的精度估算方法;用等权代替法估算界址点最弱点的点位中误差;
Benchmark Real Busi-ness Cycle theories, however, analyze the dynamic effects of government purchase shocks on consumption, labor force, output level from an aspect of supply side, wealth effects and intertemporal substitution of labor force. 基本的真实商业周期理论则主要从供给的角度用财富效应和劳动力跨期替代理论分析政府购买冲击对消费、劳动投入、总产出等宏观经济变量的动态效应。
METHODS Amphiphilic polyphosphazenes with ethyl tryptophan ( EtTrp) and poly ( ethylene glycol) ( PEG) as side groups were synthesized by two substitution reactions; 方法通过两步取代反应合成了含有色氨酸乙酯(EtTrp)和不同分子量的聚乙二醇(PEG)的两亲聚膦腈;
In addition, a new series of candidates for organic superconductors were designed, based on the TTF-like extension of TPP side fragment and both partial and total O/ S ( O/ NH or S/ NH) substitution. 另外,通过对TPP侧基的类-TTF扩展和部分或全部的O/S(O/NH或S/NH)桥联原子取代所设计的系列分子可能成为有机超导材料。