查询词典 essential resistance

Subgrade structure, as the main structure of railway construction, should have enough carrying capacity and deformation resistance capacity, can stand repetitive strength of the vehicle load without structural destruction and excessive sedimentation and deformation, meanwhile, it should have preferable penetration resistance capacity and water stability, to reduce water immersion and intenerate effect, therefore maintaining long time stability of the subgrade.

作为铁道建筑主体构筑物的路基结构，应具有足够的承载能力和抗变形能力，能经受车辆荷载的反复作用而不产生结构性破坏和过量的沉降变形，同时还应具有较好的抗渗透性和水稳定性，降低水的浸入及软化作用，保证路基长期处于稳定状态。

In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1～0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.

本文采用三维有限元浮动网格法仿真计算程序，对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析，对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析，在此基础上提出了推荐的施工方案；根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案；玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果，对推荐的施工方案进行了温度场和温度徐变应力仿真计算，并对比分析了两种不同骨料情况下的温度场和温度应力，结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求，且灰岩细骨料优于玄武岩细骨料；计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响，夏季蓄水方案与冬季蓄水方案相比，坝体上游变态混凝土区域最大拉应力小0.1～0.3MPa，其他部位最大拉应力无明显变化，夏季蓄水对坝体上游面混凝土的抗裂有利；根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施，对大坝的设计温控措施进行了综合评价，并提出了该工程的温控措施，对温控设计和优化施工方案具有重要参考价值。

The result indicated that, gathers in advance the emulsion water resistance and mechanics performance which in the body preparation method the one-stage process obtains is good, but two steps obtain the emulsion stability is good; The neutralizaing agent triethylamine amount used should enable to achieve neutral between x-y, to gathers in advance the body disperser and the emulsion stability only then is advantageous; The water affinity chain extendor DMPA content to the emulsion viscosity, stable and the emulsion cellophane water resistance has the remarkable influence, its amount used general control between x-y; Hard section isocyanogen diethylene glycol dinitrate primary control paint film degree of hardness, module, anti-avulsion, wear-resisting and so on performance, the soft section low-molecular polymer polyols primary control paint film elasticity, hydrolisis performance and so on bears the low temperature and bears

结果表明，预聚体制备方法中一步法得到的乳液的耐水性和力学性能较好，而两步法得到的乳液的稳定性好；中和剂三乙胺的用量应使中和度达到x-y之间，对预聚体的分散和乳液的稳定性才有利；亲水扩链剂DMPA的含量对乳液的粘度、稳定性及乳液胶膜的耐水性有着显著的影响，其用量一般控制在x-y之间；硬段异氰酸酯主要控制涂膜的硬度、模量、抗撕裂、耐磨等性能，软段低聚物多元醇主要控制涂膜的弹性、耐低温和耐水解等性能

Characteristic bands of the resistance gene to powdery mildew Pm21 and Pml3 were found, which could be used in the identification of the disease resistance genes and near isogenic lines.

5发现抗白粉病基因Pm21供体亲本及其近等基因系的特征条带，以及Pm13供体亲本及其近等基因系的特征条带，可用于抗白粉病基因及近等基因系的鉴定。

Firstly, polyacrylamide with 26 million molecular weight was compounded in lab through establishing optimum compounding initiator proportionality of 1:1. 3 and mass concentration of 170 mgL^(-1), temperature of 10 ℃, acrylamide mass percentage of 25%, electrical conductivity of 3.6 μSm^(-1) and pH value of 6.57. The salt-resistance, thermal endurance and shear-resistance of polyacrylamide could be enhanced b introducing sulfonic acid group or styrene sulfonate group or drawing the two groups above at the same time. Secondly, chelator HEDP, bactericide isoquinoline ketone and oxygen scavenger thiourea were optimized to improve the compatibility of polyacrylamide and formation water.

在由室内试验确定了复合引发剂最佳比值1：1.3和质量浓度170 mgL^(-1)、合成最佳温度10℃、丙烯酰胺单体质量分数25%、电导率3.6μSm^(-1)和pH值6.57后，合成出相对分子质量高于2.6×10^7的聚丙烯酰胺，同时通过丙烯酰胺单体复配引入磺酸基团、苯乙烯磺酸基团或同时引入此两种基团，提高了聚合物的抗盐、抗温、抗剪切性能；后针对聚丙烯酰胺与地层水配伍性差的问题，优选出HEDP螯合剂、异噻唑烷酮杀菌剂和除氧剂硫脲，对聚合物稳定效果明显。

In this paper, preservation characteristics of the viviparous propagule of Kandelia candel and Aegiceras corniculatum, change of nutrient content and caloric values of several mangroves species during winter, cold resistance and salt resistance and the effects of supplemental calcium on the seedling of three mangrove species were studied, the main results showed as follows

本文进行了红树植物对低温和盐度的某些适应生理生态学研究，主要讨论胎生繁殖体的贮藏特性、不同盐度和低温下生理生态指标的变化和补充钙的效应，以及这些处理下，植物体中6种元素和热量的变动特性等。

These products, In 1991, passed the provincial technical appraisals, in 1993, won the National Spark-Star Production Exhibition Golden Award and Golden Award of Ministry of Buikling Material Industry, P-brick has high cold crushing strength, good thermal shock resistance iow porosity, so as to be suitable for rotarykiln is burning zone transting zone, cooling zone, cooling machine and cement vertical kiln is high temperature zone, PA-brick has high cold crushing strength, good abrasion resisance, excellent slag corrosion resistance, low porosity etc, and suitable for rotary kiln is wicket, kilneye,cooling zone, cooling machine and cement vertical kiln is high tremperature zone etc.

该产品一九九一年通过省级技术鉴定，一九九三年荣获全国星火成果展览会金奖和建材部建材金奖。P砖具有常温耐压强度高、热震稳定性好、气孔率低等特点，适用于水泥回转窑窑口、窑尾和冷却带、冷却机及水泥立窑高温带等部位。

Based on the findings in the comparative study of immune parameters between Chinese shrimp Fenneropenaeus chinensis and Kuruma prawn Marsupenaeus japonicus, this thesis firstly carry on the researches of iNOS activity in shrimps, and find it a reliable parameter for indicating the disease resistance ability in shrimps. The results here could offer a sound scientific basis for the better understanding of the mechanism of shrimp disease resistance ability to WSSV infection, as well as the development of countermeasures for the disease control in shrimp culture industry.

本文在系统比较两种对虾感染WSSV病毒过程中抗病力指标变化的基础上，优选出与WSSV感染直接相关的抗病力指标，并首次对对虾的一氧化氮合成酶进行了系统的研究，所得到的结果为深入了解对虾对白班综合症病毒的抗病力机制，并建立和发展相应的病害防御措施提供了科学依据。

There is insulin resistance in patients with cerebral lacunal infarction. Cerebral insulin resistance may be one of its risk factors for cerebral lacunal infarction.

腔隙性脑梗塞患者存在胰岛素抵抗，胰岛素抵抗可能是腔隙性脑梗塞的危险因素之一。

Compared with the conventionalemulsion polymerization system in the presence of sodium dodecyl benzene sulfonate, the latices prepared by emulsifier-free emulsion polymerization have much more narrow distribution of latex particle sizes (0.2um in diameter), better resistance to electrolytes, pH, freeze-thaw, and better mechanical stability. Not only the tensile strength of the copolymers prepared by this method is obviously increased, but also the water resistance and adhesion capacity are significantly enhanced. On the other hand, the TG results indicate the copolymer has lower thermal stability than conventional copolymer.

实验结果表明，与传统乳液聚合体系相比，所获得的无皂乳液的乳胶粒子大小均一，粒径在0.20um左右；乳液具有优异的稳定性，不受酸碱度、电解质和低温冷冻的影响；附着力和粘接强度明显提高；成膜后显示较高的耐水性；但TG表明乳胶膜热稳定性有所下降。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。