查询词典 cracking

But the research on the low-temperature cracking is still immature up to now, which can justify the absence of related indices of low-temperature cracking of all AC pavement design methods.

但是，从查阅的文献可以看出，对于沥青路面产生低温开裂（包括一次性大幅降温引起的收缩开裂和温度疲劳开裂）的机理，人们的认识是一致的；但是，对于沥青路面低温开裂等问题的研究至今仍不够成熟，世界各国的沥青路面设计方法中均未引入低温开裂的有关指标就说明了这一点。

In this paper, macro and micro cracking features of fuel oil servo-piston cup leather s were observed and stresses of the cracking cup leathers were calculated.

对某燃油泵活塞皮碗开裂的宏观、微观特征进行了观察与分析，并对皮碗的受力状态进行了分析计算，结果表明，皮碗的开裂性质为早期机械疲劳，其原因是皮碗在压制过程中，橡胶层与金属骨架间的结合力不均匀，结合力不均匀是由于JQ-1粘结剂界面氧化所致。

Based on the analysis of the main failures discovered in pavement on steel deck plate and the demanding service condition of the pavement on steel deck,high-temperature rutting test,low-temperature bending test and controlled stress flexural fatigue test are used to study the performance of asphalt mixtures modified by epoxy resin including high-temperature stability,low-temperature cracking-resistance,and fatigue cracking-resistance,which are served to evaluate the modification effect of epoxy resin of different contents.

文摘：在分析钢桥面铺装层主要病害和特殊工作环境的前提下，分别采用高温车辙试验、低温小梁弯曲试验和控制应力小梁弯拉疲劳试验，研究了不同环氧树脂掺量下的环氧树脂改性沥青混合料的高温稳定性、低温抗裂性和抗疲劳性能。

Based on the analysis of the main failures discovered in pavement on steel deck plate and the demanding service condition of the pavement on steel deck,high-temperature rutting test,low-temperature bending test and controlled stress flexural fatigue test are used to study the performance of asphalt mixtures modified by epoxy resin including high-temperature stability,low-temperature cracking-resistance,and fatigue cracking-resistance,which are served to evaluate the modification effect of epoxy resin of different contents.

在分析钢桥面铺装层主要病害和特殊工作环境的前提下，分别采用高温车辙试验、低温小梁弯曲试验和控制应力小梁弯拉疲劳试验，研究了不同环氧树脂掺量下的环氧树脂改性沥青混合料的高温稳定性、低温抗裂性和抗疲劳性能。

Aiming at main failure discovered in pavement on steel deck plate, this thesis practiced tests to study some performances closely related with using quality of pavement, which included high-temperature stability, low-temperature cracking-resistance, fatigue cracking-resistance and water stability.

本文针对国内钢桥面铺装的主要病害，通过室内试验着重研究了与铺装层运营质量密切相关的环氧树脂改性沥青混合料高温抗流动性、低温抗裂性、抗疲劳开裂性、抗水损坏性等性能，以考察环氧树脂及其用量对沥青混合料性能的改性效果。

The paper relying on project practice of the express highway from Taiyuan to Changzhi of Shanxi Province, according to demanding of "Technical Specifications for Construction of Highway Asphait Pavements ", combining with own region climate characteristic and concrete design, and construction request, it has carried out SBS modified studying on shell-90# asphalt, so drawing a conclusion: 1. Having studied the quantity of SBS modifier"s effect on the temperature sensibility, the high temperature stability, the low temperature resistance to cracking , elasticity and the durability of asphalt ,meanwhile, having studied the quantity of SBS modifier"s effect on the water stability, the high temperature stability , the low temperature resistance to cracking of asphalt mixture, having compared SBS modified bitumens various function. As a result ,when the amount of SBS added is 5%, every function is comparatively even.

本论文依托山西省太—长高速公路建设的工程实践，按照《沥青路面施工技术规范》的要求，结合本地区的气候特点和具体设计、施工要求，对壳牌90#沥青进行了SBS改性研究，得到如下结论：(1)研究了SBS改性剂用量对沥青的温度敏感性、高温稳定性、低温抗裂性、弹性及耐久性的影响，同时研究了改性剂用量对沥青混合料的高温稳定性、低温抗裂性和水稳定性的影响，比较了SBS改性沥青的各项性能，结果表明当SBS掺加量为5%时，各性能较为均衡。

From the microstruture observation, this dilatancy produced is clearly associated with a change from crystal plasticity plus minor cataclasis (formation of closed intragranular cracks) at high pressure (20MPa) to crystal plasticity plus significant cataclasis (involving axial cracking, intragranular cracking, crack opening and shearing) below 10MPa.

此时的微结构研究也发现：岩盐流变过程中膨胀的产生是由高围压下（20MPa左右）的晶体塑性加较少碎裂到低围压下（10MPa左右）的晶体塑性加主要的碎裂（包括纵向裂隙、晶内裂隙以及裂隙的张开与剪切）。

Because of the direct path coefficient reaches 0.796, the lignifications degree of epicarps plays an important role on fruit cracking. So it can be taken as a main selective trait for anti-cracking variety.

外果皮木质化程度对裂果的直接作用最大，直接通径系数达到0.796，可将其作为筛选抗裂品种的重要参考性状。

Taking one kind of specification boiler pipe as the object of study, the cracking parent metal, the cracking fragment and the primary goods were analyzed by vertical and horizontal directions.

以某种规格锅炉炉管为研究对象，在炉管爆裂处的母材、撕裂碎块以及供货原材料的纵横两个方向分别取样进行分析，探讨锅炉管爆裂处的金相变化对炉管失效的影响，并给出锅炉炉管爆裂破坏的金相学原因。

This research deals with the mechanical mechanism of expansion of steel slag sand mortar through the measurement of strength and expansion rate. The results indicate that the improvement of matrix strength could lower the expansion rate of steel slag sand mortar, extend the cracking age, reduce the degree of cracking but couldn't prevent the specimens made with steel slag from crack.

通过力学性能和80℃水热加速养护条件下砂浆棒自由线性膨胀率实验，结合SEM等微观测试技术，分析探讨了不同基体强度对钢渣砂砂膨胀行为的影响及水热养护不同龄期的力学性能与自由线性膨胀率的关系，从力学角度阐述了SSM膨胀破坏的机理。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。