查询词典 flame-resistant

The results show that the microstructures of these three kinds of coating are different from those of the matrix (20 steel). The wear resistance of the flame spray coating is 4. 9 times that of the matrix. This is caused by the existance of hard noncrystal microparticals. The wear resistance of the coating by flame spray welding is 6. 3 times that of the matrix. The reason is that the fine crystal grains can be formed and the solution strengthening, dispersion hardening can be induced by these alloy elements. The resistance of the laser remelt coating is 8. 8 times that of the matrix. This is due to the solution strengthening, dispersion hardening and the existence of very hard dendritic crystal, eutectic and martensite in the microstructure.

作者指出，喷涂层由于层内有一定数量高硬度的合金非晶质点存在，其耐磨性是钢基体的4.9倍；喷熔层内合金晶化产生的晶粒细小，合金元素能起固溶强化作用，也能生成化合物产生弥散硬化作用，故此耐磨性是钢基体的6.3倍；激光涂敷层除所含合金元素产生的固溶强化和弥散硬化作用外，表层组织为高硬度的枝晶+共晶和马氏体，故其耐磨性是钢基体的8.8倍。

The effects of flame retardant and toughening agent on mechanical properties and flame retardance of composite were studied.

随着合成材料在各个领域的应用越来越广泛，对材料的阻燃性能要求也越来越高。

To study the effects of the obstacle on flame propagation and flame inner structure in methane/air explosion, the effects of the mesh are studied by high speed photograph and schlieren photographs from the microscopic view, and numerical simulation is build.

通过高速摄影与纹影方法从细观角度研究了网状障碍物对管道内瓦斯爆炸火焰细微结构的影响，以及火焰加速机理，并进行了数值模拟。

The main products are: handheld flame signal, rocket parachute flame signal, floating smoke signals,救生圈since lighting and spontaneous composition of smoke signals, smoke signals救生圈spontaneous, self-throw rope, throw rope equipment, marine raincoats suit, since the lighting救生圈, Emergency use of fresh water, first aid kit and other supplies.

主要产品有：手持火焰信号、火箭降落伞火焰信号、漂浮烟雾信号、救生圈自亮灯和自发烟雾组合信号、救生圈自发烟雾信号、自持式抛绳器、抛绳设备、船用雨衣套装、救生圈自亮灯、应急用淡水、急救药箱等用品。

The results show that the metal stannate combined with Mg2 can be used as a highly effective flame retardant for flexible PVC, and it can be seen that the Mg2 enhances the flame retardant properties of the samples through the endothermic dehydration, the stannate may act in both the condensed and vapor phases, but mainly in the condensed phase as a Lewis acid.

结果表明：锡酸盐和Mg2复合使用能明显提高对软PVC的阻燃效率，Mg2主要通过脱水吸热作用使材料的阻燃性能提高，而锡酸盐可分别在凝聚相和气和起作用，但主要为凝聚相Lewis酸催化机理。

A varnish used for coverlay was prepared with special epoxy resin, carboxyl-terminated acrlonitrilebutadiene rubber and phosphorated flame retardant. To conform to the requirements of RoHS, the halogen-free flame-retarded coverlay does not contain Stibium, lead, mercury, cadmium and chromium Ⅵ.

摘 要：采用端羧基丁腈橡胶增韧改性特种环氧树脂体系，配合使用添加型磷系阻燃剂得到覆盖膜用胶液，以此制备的SF305C无卤阻燃型覆盖膜不含锑和铅、汞、镉、六价铬等有害重金属，满足欧盟RoHS指令要求。

I grasped it in my hand, put out the flame as quickly as I could, lighted my taper in the fire itself, and opened the crumpled paper with inexpressible emotion, recognizing, when I had done so, that these characters had been traced in mysterious and sympathetic ink, only appearing when exposed to the fire; nearly one-third of the paper had been consumed by the flame.

我吓了一跳。赶急把那张纸抓在手里，扑灭了火，直接点燃了那支小蜡烛，然后带着难以表达的激动心情摊开了那张扭皱了的纸。我发觉那上面的字是用神秘的隐显墨水写的，只有拿到火上去烘才会显现出来。那张纸有三分之一多一点已被火烧掉了。

Investigation was focused on the effect of content, fineness and surface treatment of Mg2 as well as flame-retardant synergist on mechanical properties and flame-retardant properties of the system.

探讨了Mg_2阻燃剂用量、粒径大小、表面处理方法及与红磷的阻燃协同效应等对体系力学性能、阻燃性能的影响。

Coal and montmorillonite and intumescent flame retardant have good synergist flame retardant effects.

煤、蒙脱土及膨胀型阻燃剂之间存在良好的协同阻燃效应，可使聚乙烯的极限氧指数得到一定的提高。

This paper expounds the trend of armor development in the future, points out that the multistage series shaped charge is the development of the high explosive anti tank projectile, analyses the active process of three stage series shaped charge and the main factors to affect the flame proof time ,and brings forward zero dimentional equation and synthetic test method of the flame proof time .

该文阐述了未来装甲发展的趋势，指出了多级串联聚能装药是破甲弹的发展方向；分析了 3级串联聚能装药的作用过程和影响隔爆时间的主要因素，提出了隔爆时间的零维计算公式和综合测试方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐