脆沥青

According to the analysis theory of spatial vibration of high-speed train and slab track system, the effect of voided slab induced by deteriorations of cement asphalt mortar layer, such as felt invalidation, dehiscence, embrittlement and cataclasm, etc, on vibration responses of the slab track was studied.

摘 要：基于高速列车-板式轨道系统空间振动分析理论，研究板式轨道水泥沥青砂浆填充层的劣化(如脱层、开裂、脆化与碎裂等)引起的轨道板悬空现象对板式轨道振动响应的影响。

Hardening, embrittling and cracking at low temperature of bitumen can be reduced due to improved flexing so as to extend the service life of road and rolling material.

改善沥青的低温屈挠性可减轻沥青低温下的发硬、发脆、龟裂，提高公路、卷材的使用寿命。

Performances of paving asphalts are markedly influenced by waxes, such as forming ruttings in summer and splits in winter, so it is very important to develop new methods for dewaxing.

蜡的存在严重影响道路沥青的使用性能，蜡使路面夏季发软易形成车辙，冬季发脆易形成裂缝，因此开发降低蜡含量的新工业技术具有重大意义。

The series equipment versatillty,its performance had achieved the international advanced level,is at present is most effective,the practical reliable crushed stone machine,is suitable specially for the manufacture grinding compound,fireproof The matreial,the cement ,the quartz sand,the emery,the stove are cut broken glass the power,the copper ore,the concrete aggregate and so on many kinds of,the crisp materials on the control granulated substance machine energy conserva tion 50%,is in the present world system qranulated substance equipment.

本系列设备用途广泛，其性能已达国际先进水平，是目前最行之有效，实用可靠的碎石机器，特别适合于制造磨料，耐火材料，水泥。石英沙。钢砂。炉渣粉。铜矿石。铁矿石。金矿砂。河卵石。混凝土骨料。沥青骨料等多种。脆物料的细碎与中碎，是一种高效。节能的碎石制砂设备，比传统制砂机节能50%，是目前世界上篝的制砂设备。

The series equipment versatillty,its performance had achieved the international advanced level,is at present is most effective,the practical reliable crushed stone machine,is suitable specially for the manufacture grinding compound,fireproof The matreial,the cement ,the quartz sand,the emery,the stove are cut broken glass the power,the copper ore,the concrete aggregate and so on many kinds of,the crisp materials on the control granulated substance machine energy conserva tion 50%,is in the present world system qranulated substance equipment.

制砂机，制沙机设备用途广泛，其性能已达国际先进水平，是目前最行之有效，实用可靠的碎石机器，特别适合于制造磨料，耐火材料，水泥。石英沙。钢砂。炉渣粉。铜矿石。铁矿石。金矿砂。河卵石。混凝土骨料。沥青骨料等多种。脆物料的细碎与中碎，是一种高效。节能的碎石制砂设备，比传统制砂机节能50%，是目前世界上篝的制砂设备。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。