c20

Nondestructive testing of C20 concrete strength after high temperature

高温作用后C20混凝土强度的无损检测

Research of Relationship between Pore-structure , Performance and Material Composed of C20 Concrete

C20混凝土组成材料与孔结构及性能关系的研究

Experimental Study on Failure Criterion and Constitutive Relation of Early-age C20 Concrete under Biaxial Stress State

二向应力状态下早龄期C20混凝土的破坏准则和本构关系试验研究

Application of FDN concrete admixture series for c20 ~ c60 pumping concrete projects

FDN系列外加剂在各种泵送混凝土（C2～C60）工程上的应用

Relationship of Compressive Strength of Specimens with Various Shapes and Sizes for C20 MPa Grade Concrete

不同形状尺寸C20混凝土试件抗压强度的关系

SS304L showed more suitable compatibility with the alloy than C20 in long-term thermal storage application .

结果表明，对于长期的储能应用，SS304L钢比C20钢更能与该合金相容。

The C20 ∶ 5n-3 plays an important role in growth , feed conversion efficiency and reproduction .

C20∶5n3对鲍鱼的生长有着极其重要的作用，它能显著提高鲍鱼的生长和饲料转化率，改善鲍鱼的繁殖力。

Programmable controller C20 is used in the program control of TIG automatic welding on manufacturing micro motor shell and stator core .

利用C20系列可编程序控制器对微电机加工制作中的定子铁心、电机壳体TIG自动焊接实现过程程序控制。

Finally , some basic strength indexes of C20 ~ C40 recycled concrete with 100 % RCA are proposed .

最后，针对再生粗集料取代率为100%的C20~C40再生混凝土主要强度指标的取值提出了建议。

The effect of C20 ∶ 4n-6 on the physiology and chemistry in abalone has become a focus in recent years .

对于鲍鱼体内C20∶4n6潜在的生理和生化作用已逐渐引起重视，这将是以后研究关注的焦点。

The C20 ∶ 4n-6 and EPA have synergic effects on nutritional physiology .

C20∶4n6和C20∶5n3之间的协同效应对鲍鱼的营养生理有重要的影响。

First , the basic structures character of the three C20 isomers are studied , then the stability sequence of the three ones have been compared by the HMO method .

首先，本文研究了C20三种异构体的基本结构特征，并采用HMO方法对环型，碗型，笼型三种异构体进行了稳定性比较，得到了它们的稳定性次序。

This paper explained the significance and the technical ways of developing Green High Performance Concrete of middle-strength grade ( C20 ~ C40 ) with high addition Fly Ash .

论述了发展中等强度等级（C20～C40）高掺量粉煤灰绿色高性能混凝土的意义及其配制的技术途径。

The project adopted C20 dry-mixed cement concrete ram-expanded pile , the reinforced road has not appeared new sinkage . The foundation project has gained anticipated result .

结果表明：工程采用C20干拌水泥混凝土夯扩桩对该路段路基进行了加固，加固后的路段路基未出现新的沉陷，这说明加固工程取得了预期的效果。

The concrete strength can get the C20 or C30 grade when the structure is reinforced in the non-stop condition , which achieves the expected function and notable economic performance .

在不停产的条件下，对结构进行加固，使混凝土强度达到C20、C30强度等级以上，达到预期的使用功能。

Based on the results of Bayes estimations , the standard deviations for the compressive strength of RAC with strength grades of C20 and C30 were proposed .

根据统计分析和贝叶斯估计结果，建议了强度等级为C20和C30再生混凝土抗压强度的标准值与标准差的取值。

We demonstrate that C20 with Mo dopant are very effective to the dissociation of water molecule and that the interaction strength can be strengthened by injection of charges .

结果表明Mo掺杂的C20能有效分解水分子。而水与C20之间的相互作用强度能通过注入电荷得到加强。

C20 ∶ 55 , 8 , 11 , 14 , 17 - eicosapentaenoic acid , 16.71 % ;

C20∶55,8,11,14,17-二十碳五烯酸（16.71%）；

McNemar Chi square test was only indicated for b + c20 , when b + c ≤ 20 , the method of exact probability introduced by this article should be considered .

结论：McNemar卡方检验方法仅适于b＋c＞20情形，当b＋c≤20时宜用本文介绍的精确概率方法：或通过公式计算或直接查表。

Results : GFR significantly increased in DM group compared with that in control group ( P < 0.01 ) . Tp and T1 / 2 of the renogram gradually prolonged , and C20 increased in DM patients .

结果：DM较对照组GFR增高，Tp、T1/2逐渐延长，C20增加。

C20 values show that it is more efficient in declining surface tension of the water . 2 The steady fluorescence quenching method has been used to study the aggregation numbers ( N ) of Gemini surfactants in aqueous solutions .

利用稳态荧光猝灭法研究了一系列Gemini表面活性剂的胶束聚集数。

In the test , the strength grade of concrete is C20 and C60 , and the cementitious system contains 10 % , 20 % , 30 % and 40 % of fly ash in accord with weight .

实验中应用的混凝土的强度等级分别为C20和C60，其中粉煤灰的掺量（胶凝材料的质量分数）分别为未掺、10%、20%、30%、40%。

The percentages of C18 ∶ 2 and C20 ∶ 4 , which are the important nutritional essential fatty acids , and 24.08 % and 2.34 % in rabbit liver . The percentage is the highest in the 4 animal livers .

尤其是兔肝中营养必需脂肪酸亚油酸和花生四烯酸分别占24.08%和2.34%，含量很高。

The results showed that through mixing extra-fine sand with lime , shaping to form the small balls and then autoclaving it , extra-fine sand could be solidified into a kind of solid coarse aggregates , and by using this aggregates , a C20 concrete could be manufactured .

结果表明：采用长江粉细砂和石灰，经混料、成球、蒸压可制得性能较好的粉细砂固结集料；由这种集料可配制出C20等级左右的混凝土；