Analysis and calculation of temperature variation and shrinkage effects on RC building structures;
混凝土结构温差收缩效应分析计算
Combining spatial finite element method and theoretical way,shrinkage effects at interfaces under various factors were compared such as different casting time intervals,different reinforcement ratios,different average environmental relative humidity and effects under different codes.
采用空间有限元与理论分析相结合的方式,比较不同分层浇筑时间间隔、配筋率、环境年平均相对湿度以及不同国家规范下的收缩效应,总结各因素对结合面收缩的影响。
The experiment results show that the ultrasonic pulse current has a significant influence on the pinch effect of hybrid pulse variable polarity TIG arc,resulting in the obvious reduction of arc radial dimension.
研究结果表明:超音频脉冲方波电流对变极性TIG电弧具有显著的收缩效应,电弧径向尺寸明显减小,在一定范围内提高脉冲电流频率,减小脉冲占空比,增加脉冲电流幅值,可提高铝合金焊缝熔透率,有利于改善和提高铝合金的焊接质量。
The experimental results show that with the increase of current frequency,the cleaning action of ultrafast-convert high-frequency variable-polarity arc for surface oxide is significantly enhanced,arc plasma has an obvious pinch effect,arc voltage and arc resistance increase respectively,but arc blow-effect is also enhanced.
结果表明,变极性电流频率和变化速率具有对电弧形态、稳定性及电弧力的控制能力,提高电流极性变换频率,电弧清除氧化膜的能力增强,电弧表现出明显的收缩效应,电弧电压和电弧等效电阻增大,但电弧偏吹作用加剧。
Another Pondering over the Length Shrinkage Effeciency of the Narrow-Sense Relativity;
对狭义相对论长度收缩效应的再思考
A PERMEABILITY MODEL CONSIDERING THE EFFECTIVE STRESS AND COAL MATRIX SHRINKING EFFECT
考虑有效应力和煤基质收缩效应的渗透率模型
Analysis of temperature variation and shrinkage effects on ultra-long prestressed concrete structure
超长预应力混凝土结构温差收缩效应分析
Numerical Simulation of Tight Coalbed Methane Reservoir with the Matrix Shrinkage Effect
考虑基质收缩效应的致密煤储层数值模拟
Analysis on Shrinkage Effects of Concrete Interfaces in Long-span Continuous Rigid Frame Bridges
大跨径连续刚构桥混凝土结合面收缩效应分析
Ang Ⅱ induced obvious contraction of TM cells in a dosage dependant manner, but it had no effects on cell junction.
结果 :AngⅡ产生明显细胞收缩效应 ,呈浓度依赖性 ,但细胞间连接无改变 ;
Study on Shrinkage Effects for Crack Control in Concrete Small Hollow Block Building;
混凝土小型空心砌块建筑裂缝控制的收缩效应研究
Research on Temperature Effects and Shrinkage-Creep Analysis for Long-span Prestressed Concrete Continuous Rigid Frame Bridges;
大跨径预应力混凝土连续刚构桥温度效应与收缩徐变效应分析
Analysis of Shrinkage and Creep Effect for Long-Span Rigid Frame Bridges with High Piers
高墩大跨连续刚构桥的收缩徐变效应分析
Research on Construction Control for PC Continuous Rigid Frame Bridges and Analysis of Creep and Shrinkage Effect;
连续刚构桥施工监控与收缩徐变效应分析
High Performance Concrete Mix Proportion and the Effect of Shrinkage and Creep
高性能混凝土配合比及收缩徐变效应研究
Analysis of Shrinkage and Creep Effect of Simple-Supported-to-Continuous Long Span Box Girder Bridges
大跨径简支转连续箱梁桥收缩徐变效应分析
Impact energy-absorption property of rock under tri-axial compression
受三维静载压缩岩石对冲击能的吸收效应
Acute and Chronic Effects of Cholesterol on the Contraction of Extracorporeal Gallbladder Muscle Strips of Guinea Pigs
胆固醇对豚鼠离体胆囊肌收缩的急慢性效应
Shrinkage and creep effects of long-span simple-supported-to-continuous box girder bridge
大跨径简支转连续箱梁桥收缩徐变效应
Study of strain rate imaging in evaluating the postsystolie shortening in ischemic myocardium
应变率成像评价缺血心肌收缩后收缩
Nutritional and Physiological Effects and the Mechanism of Active Immunization Against Cholecystokinin in Pigs
胆囊收缩素主动免疫对猪的营养生理效应及其机制的研究
MULTI-PHOTON SQUEEZING EFFECT FOR THE MIXED ABSORPTIVE-DISPERSIVE DRIVEN OPTICAL SYSTEM IN GOOD CAVITY CASE
良腔情况吸收与色散混合受驱动光学系统多光子过程压缩效应
