When some main fac tors change, there is uncertainty in economic forecast if the forecast method is used as usual.
经济预测中发生主要影响因素改变时，若采用通常的预测方法会因历史数据过少而出现较大误差。
At the time he was writing, new inventions in fac-tories were turning out wealth on a scale undreamt of by previous generations.
在他写作的年代，工厂里的新发明正在生产出以往世代梦想不到的财富。
In its statement last night the FAC, expressed support for Allen and condemned "the vitriol that has been directed at her in recent days".
昨晚FAC的声明对艾伦表示支持，同时谴责“近来对她尖酸刻薄的批评”。
AIM: To study the value of oral ferric ammonium citrate (FAC) solution as a negative gastrointestinal contrast agent in MR urography (MRU).
目的：研究枸橼酸铁铵作为胃肠道阴性对比剂对改善磁共振尿路成像(MRU)质量的价值。
Using of the excellent FAC-resistant piping materials can effectively reduce the rate of wall-thinning, as a result, it has been widely used in design or later design alteration.
研究及实践表明，目前已有多种技术用于抑制、减缓上述壁厚减薄现象。其中，选用抗fac性能优良的管道材料能有效地降低壁厚减薄速率并已在设计或设计变更中得到广泛应用。
Abstract: in nuclear power plants, the FAC (flow accelerated corrosion) of carbon steel occurs mainly in the secondary circuit, causing a significant impact on production safety.
摘要：在核电厂中，二回路碳钢管道的流动加速腐蚀(FAC)对安全生产造成很大影响。
Fast automatic adapting combination gridding method (FAC) is a new technique developed in recent years for solving large-scale computation problem.
快速自适应组合网格方法(简称FAC)是近年崛起的解大型计算问题的新技术。
The experience, mechanism and countermeasures about the aging management of FAC in nuclear power plants are summarized in this paper.
本文简要总结了核电厂管道流体加速腐蚀的经验教训、机理及其老化管理的一些方法和对策。
The results are compared with those by the commonly used single fac-tor judgement and with practical ones, It is concluded that the grey clustering method is better in terms of resolution.
结果表明：灰色聚类方法评价煤的结渣性能时，其分辨力比用常规方法判别时高，判别结果更符合客观实际。
Methods for determining the stress growth fac- tor of three—way pipes in special shape are stud- ied specially and applied in the stress analysis of pipes in actual projects.
对特殊形状三通应力增大系数的确定方法进行了专门研究，并将其应用于实际工程管道的应力分析。
There were no FAC differences in different parastemal cross-sectional levels (P>0. 05).
各切面面积变化分数测值无显著差异（P>0.05）。
Conclusion: The contrast pattern of FAC in different concentrations will change in accordance with different MR fast sequences.
结论：FAC对比效果随浓度和脉冲序列的改变而改变。
Result Compared with FAC, BMCs in neck and distal 1/3 diaphysis of femur were significantly decreased in TSG( P< 0.05).
结果与对照组相比，实验组大鼠股骨颈和股骨干远1/ 3段的矿盐含量下降有显著性意义（P<0 .0 5 ） ；
Sediments in basins consist of grey coal-bearing formation composed of fluvial alluvial, proluvial fac ies, lacustrine-swamp facies. The material composition of sedim…
沉积物组成了山区河流冲洪积相、湖沼相的灰色含煤建造，其物质成分与基底岩石具明显继承性。
Objective to understand the current status of sports behavior of workers in Shenzhen City from outside and the fac-tors affecting their regular sports.
目的了解深圳市外来劳务工运动行为现状及影响其进行有规律运动的因素。
Objective to understand the current status of sports behavior of workers in Shenzhen City from outside and the fac-tors affecting their regular sports.
目的了解深圳市外来劳务工运动行为现状及影响其进行有规律运动的因素。
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