抗冻性

经低温锻炼后，幼苗中的CaM含量的增加有助于SOD、POD和线粒体Ca2+-ATPase活性的提高，进而对幼苗抗冻性的提高有明显的促进作用。

The increase of CaM content that promote the higher of activities of SOD , POD and Ca ~ ( 2 + ) - ATPase of cuttings , and further result in the adaptive changes associated with the development and enhancement of freezing resistance .

钢纤维混凝土电杆抗冻性试验研究

Experimental Study on Steel Fiber Reinforced Concrete Poles on Freezing Resistance

讨论了SOD在树木抗冻性中可能具有的作用。

The possible role of SOD as free-radical scavenger in cold resistance is discussed .

橡胶粉对混凝土在水和NaCl溶液中抗冻性的影响

Impact of rubber powder on frost resistance of concrete in water and NaCl solution

低温胁迫下，品种抗冻性越强，SOD、POD的平均活性越高。

Under low temperature stress , SOD and POD activity was higher when using variety with stronger cold-resistance characteristics .

经过大量试算和仿真效果对比，确定了各抗冻性指标的BP网络模型和RBF网络模型的最佳网络结构和相关参数。

After a lot of trial and comparing with their simulation results , the article determines the best structures and performance parameters of BP neural network and RBF neural network models .

建立了基于RPC抗冻性的寿命预测模型，分别对淡水冻融以及海水冻融的RPC的寿命进行了预测。

The life prediction model of RPC frost resistance was established . The life of RPC frost resistance was predicted with Freezing-thawing of water and seawater respectively .

HSC和HPC在盐湖卤水的1550次DDF作用下具有很高的强度，且HPC的抗冻性明显优于HSC。

Though both HSC and HPC exhibit high compressive strength when subjected to 1550 DDF cycles in bitterns , HPC show a freezing-thawing durability much better than HSC .

与单因素冻融作用相比，经过4周ASR结束时混凝土孔结构得到优化，混凝土抗冻性得到了明显改善。

Compared with the single factor of freeze / thaw cycle , the frost resistance of concrete is appreciably improved , due to improved pore structure by ASR .

为了提供一定的高强混凝土抗冻性定量化设计评估标准，本文定义了初劣点与陡劣点，并且为了确定这些点分别提出了P值检验法、拟合曲率法；

In order to offer certain standards for quantitative design about frost resistance of the high strength concrete , the initial degenerate point and the sharp degenerate point were defined in this paper , and P value test method and regression curvature method were provided to determine these points respectively .

采用电导法、组织变褐法、生长恢复法及TTC还原法研究了北京园林中主要常绿阔叶植物的抗冻性。

The methods of electric conductivity , tissue browning , growing recovery and TTC reduction were used to study the freezing tolerance of main introduced evergreen broad leaf plants in Beijing open gardens .

结果表明，F型道路快速修补材料具有较好的流动度，与基体粘结能力强、强度高，脆度系数低，抗渗、抗冻性佳，抗化学侵蚀能力强等优点。

The results show that F type rapid road patching material has the merits such as better fluidity , strong bonding power with the matrix , high strength , low coefficient of fragility , fine impermeability , good frost resistance and strong resistance to chemical attack .

在Na2SO4溶液中，FA与SF双掺的混凝土抗冻性最强，FA混凝土次之，纯水泥混凝土较弱；

In Na_2SO_4 solution , the frost resistance of concrete with FA and SF is the best while that of concrete is the worst , and the frost resistance of concrete with FA takes the second place .

以粉煤灰为主要原料能制备出抗压强度、透水系数、保水性、抗冻性符合JC／T945-2005《透水砖》标准要求的制品。

Using fly-ashes as main raw materials could make permeable brick , it 's compression strength osmotic coefficient , WHC could attend Chinese Standand JC / T945-2005 .

在CBF1、CBF2、CBF3和CBF4转基因拟南芥植株中，不需低温刺激，4种CBF基因的组成表达都能够激活含有CRT/DRE元件的COR基因表达，从而提高植株的抗冻性。

The four CBF genes can activate the COR genes contained CRT / DRE elements in their promoters without the induction of low temperature , and result in improvement of the tolerance to low temperature .

论文还阐述了FKJ胶结料有良好的耐久性，即有良好的抗碳化性，抗冻性，耐化学侵蚀性等，故它有广阔的应用前景。

In addition the paper points out that FKJ binder has good durability and fine resistance to carbonation , frost and chemical attack , etc , therefore has bright prospects in application .

高性能混凝土抗冻性与孔结构的关系

Relationship between frost durability and pore structure of high performance concrete

硅粉对混凝土抗冻性影响的研究

The Study of the Impact of Silicon Powder on Frost Resistance

高抗冻性油墨用二聚酸基醇溶聚酰胺树脂的性能研究

Performance of Dimeric-acid-based Alcohol-soluble Polyamide Resins Used for High-gelling-resistant Printing Inks

轻集料预湿程度对页岩陶粒砼抗冻性的影响

Influence of Pre-wetting Degree on Frost resistance of Shale Ceramsite Concrete

如何提高路面混凝土的抗冻性

Research on How to Enhance Freeze Resisting Property of Concrete Pavement

国外混凝土抗冻性控制要求和试验方法综述

Requirement and test method of concrete frost resistance in various countries

引气混凝土在中国盐湖环境中抗冻性的研究

Research on Freezing-thawing Durability of Air-entrained Concrete Exposed to Salt Lakes

浅谈提高混凝土路面的抗冻性及抗盐性

Simply Talking about Enhancing Frost and Salt Resistance of Concrete Pavement

北方地区路桥工程混凝土抗冻性研究

Study on frost resistance of concrete in road and bridge engineering

磁化水对小麦幼苗抗冻性效应的初步研究

Preliminary studies of magnetic water on freeze resistance effect of Wheat Seedlings

混凝土结构抗冻性超声检测方法的研究

Study on the ultrasonic checking method for frost resistance in concrete structure

港工补偿收缩混凝土抗冻性的试验研究

Study and Freezing Tests of Shrinkage-compensating Concrete of Port Engineering

冬小麦抗霜性与抗冻性的关系

Relationship between frost resistance and freezing resistance of winter wheat

掺惰性材料水泥混凝土抗冻性试验研究

Study on the frost resistant test of concrete with a inert material