防蚀

Higher temperatures require more robust casing and nozzle materials, insulation, or ablative coatings.

较高的温度，需要更强有力的套管和喷嘴材料，绝缘，或烧蚀防热涂料。

The high temperature and normal temperature mechanical properties,the thermal properties and the ablative properties of the composite were investigated.

目前，国内使用的耐烧蚀防热材料主要有C/C复合材料、酚醛树脂基复合材料、陶瓷基复合材料等[1]。

Straight form type the characteristic advantage of horn fan air exhauster: 1, simple case of lumber of FRP fibre glass, acid-proof alkaline, anticorrosion. 2, the efficiency that prevent rain is extremely tall, do not have the worry of ooze water.

直结式喇叭扇抽风机之特点优势：1、FRP玻璃纤维材料外壳，耐酸碱，防止腐败蚀。2、防雨速率非常高，无渗水之苦恼。3、没变动之苦恼→4、没下降抽风力之捆扰。5、没下降抽风力之捆扰。6、省修理，省修养→能够应用10~20年以上。

Fluorin boric acid acidification system's acid liquid delay corrode,matching,delay velocity capability,sullage test,iron ion stabilization test,depend expanding capability was evaluated through static state and rock core acidification dynamic test.

对石南油田选用的氟硼酸酸化体系从酸液缓蚀性能、配伍性能、缓速性能、残渣试验、铁离子稳定试验、防膨性能等方面进行了较全面的室内静态评价和岩芯酸化动态评价。

The effect on circumgyration of carbon grain and the ablation of nose-tip during re-entry of stratagem missile is analyzed according to thermal transfer theory, thermo-aerodynamics and N-S equation.

根据气动热力学、传热传质学、N-S方程，分析了战略导弹再入时端头帽烧蚀与碳颗粒的旋转效应，研究结果表明碳颗粒的旋转有利于防热。

At the same time, we can also provide customers with processing services: countersunk, foot-binding, grasps the foot, the feet tied, reducing the diameter, bugle head, line cutting, depature the center as well as electric corrosion anti-slip tooth and so on.

同时，还为客户加工：沉头、扎脚、抓脚、束脚、减径、喇叭头、线切割、偏心以及电蚀防滑齿等等项目加工。

This paper also introduces properties of rayon carbon fabric /phenolic anti-ablation, and the test results of thermal-resistant articles used on three kind of solid motors ,demostrating that rayon carbon fabric /phenolic articles can resist imping ment by combustion gas flow,wit.

介绍粘胶碳布/酚醛耐烧蚀材料预浸料的组成、性能，及其制成的防热零件在固体火箭发动机上的应用试验。

Using modified conventional powder metallurgy process for sintered Nd-Fe-B magnets , including annealing of ingot alloy, hydrogen decrepitating, modified jet mill and adding additive during jet milling, we have mass-produced high performance and high corrosion resistance sintered Nd-Fe-B magnets from a conventional ingot alloy without strict protections against oxidation.

利用改进的传统粉末冶金工艺(铸锭热处理、氢爆、改进型气流磨设备以及在气流磨中掺入添加剂等)，在无严格的防氧保护情况下，从传统合金铸锭出发，工业化生产出具有高耐蚀性的N48～50档烧结Nd-Fe-B 磁体。

In order to prevent heat flow from transferring to internal structural componants, thermal protective composites are used to absorb and consume plenty of heat by means of mass losing caused by complicated physical and chemical reactions of decomposing, melting, vaporizing, subliming and so on, and widely applied as thermal protective components of strategical and tactical missiles and other re-entry spacecrafts.

烧蚀防热复合材料在热流的作用下能发生分解、熔化、蒸发、升华等多种消耗热能的物理—化学变化，藉材料自身的质量消耗带走大量热能，阻止热流传入结构内部，在战略战术导弹和航天器的防热部件中得到广泛应用。

NC cloth winding machine is special equipment that wind SRM's nozzle and prats of bearing ablation , heat protection , missile cone , emitter and astro navigation aircraft parts with bakelite .

数控布带缠绕机是用碳/酚醛，高硅氧/酚醛预浸胶带缠绕固体火箭发动机喷管，耐烧蚀，防热材料零部件，导弹鼻锥，发射筒以及宇航飞行器防热零部件的专用设备。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。