耐蚀的

The results showed that plastic deformation at both -70℃ and 180℃ made the dislocation density of AISI304 stainless steel increase with the increase of deformation. Martensite phase transformation was induced for deformation at -70℃, whereas it was not at 180℃. As the dislocation density increased, the breakdown potential of AISI304 stainless steel's passive film became a little more positive. As martensite phase content increased, it became more negative and pitting corrosion resistance decreased.

结果表明：加热180℃和低温-70℃条件下塑性变形均使AISI304不锈钢中位错密度随变形量增大而增加，AISI304不锈钢在-70℃条件下塑性变形时部分奥氏体相转变为马氏体相，而在180℃条件下塑性变形时不发生马氏体相变；位错密度的增加使AISI304不锈钢钝化膜的击穿电位略微正移，而马氏体相的增加使击穿电位呈负移趋势，材料耐孔蚀性能降低。

But the working condition of the screw pump is so rigorous that the ordinary rubber could not fulfill the requirement of the terrible working condition such as high temperature,high pressure,long working hours,corrodent,seasonal stress and so on.

但采油螺杆泵工作条件十分苛刻，如高温、高压、工作时间长、磨蚀性介质、周期性挤压力等等，传统的定子橡胶已临近其性能极限。本文主要讨论纳米CaCO3和PVC树脂对丁腈橡胶的改性效果，综合提高丁腈橡胶的强度、耐油、耐磨等性能，通过改性使得丁腈橡胶能够满足采油螺杆泵定子材料的性能要求。

Because of the fuel-rich propellant's high heat value and combustion temperature, the common stainless steel crucible and oxygen bomb's parts are always burned in the combustion heat testing process. In order to realize the proper testing of combustion heat, some fireproof materials characteristics and their application in the combustion heat testing of fuel-rich propellant were studied. Those fireproof materials include acid washing asbestos, C/C compound materials, Al2O3 chinaware and tungsten crucible.

含金属富燃料推进剂由于热值高、燃温高，在燃烧热测试过程中普通的不锈钢坩埚及附件经常被烧毁，为了正确测试金属富燃料推进剂燃烧热，对酸洗石棉、碳／碳复合材料、Al2O3陶瓷坩埚和金属钨坩埚的基本耐烧蚀特性和在金属富燃料推进剂燃烧热测试中的应用进行了实验研究。

It has both good wear resistance, and good corrosion resistance and strong resistance to pitting corrosion, intergranular corrosion resistance.

它既有良好的耐磨性，又有良好的耐腐蚀性和较强的抗点蚀、抗晶间腐蚀能力。

To make such a font, which is 8 "" design process, starting with the entire electrical conduction-shares field knives, hallyo-acidproof gold、silver "" 8 only on font style parts screen business card printing and membership card, and then use the acid etching, besidesyour is not business card printing and membership card making part of the transmission unit.

制作这种"8"字型图案的工艺，首先是在带有整个电传导股的场璃上，闲耐酸性油墨仅对"8"字形部分进行丝网制卡和会员卡制作，然后用酸蚀刻，除去未被制卡和会员卡制作部分的传导股。

On the other hand,it is demonstrated that pitting sensitivity of Al-6Mg-Zr-Sc alloy in the SRB solution is decreased and its microbiologically influenced corrosion r.

结果表明，添加Sc元素后，合金的氧化膜更加致密，具有更好的保护作用，使电极开路电位正移100 mV左右，同时Sc元素的加入降低了材料在SRB菌液中的点蚀敏感性，使材料耐微生物腐蚀性能得到提高，但是添加Sc后的合金对SRB更加敏感。

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。

This kind of high-sensitivity of ablation of thermal printing can be in the majority of 830 nanometre outlooked on imaging equipment, its plates can reach 2.5 million.

这种矮敏度的否烧蚀性寒敏印版可以在不小不小都830纳米的寒敏CTP摆设上成像，它的耐印力能到达2.5不一印。

It was shown that the pitting corrosion potential of stainless steel could be 1.0 V. The corrosion resistance of the passive film could be improved still further by adding proper quantity of K2Cr2O7 into passivating bath solution.

结果表明，医用317L不锈钢在≥30%的HNO3 35℃ 6h的条件下钝化，该钝化膜在0.9% NaCl溶液(37℃)中进行电化学测试，其点蚀电位约为1.0V，在HNO3钝化溶液中加入适量的K2Cr2O7可以进一步提高钝化膜的耐腐蚀性能。

The layered silicate/rubber nanocomposite possessed excellent physical properties,air-tightness,fatigue resistance,better flame retardance and ablation resistance.It could be used in inner tube,OTR tire tread and cover layer of conveyor belt to improve the product performance.

层状硅酸盐/橡胶纳米复合材料具有优异的静态物理性能、气体阻隔性能、耐疲劳性能以及一定的阻燃性能和抗烧蚀性能，应用于轮胎内胎、工程机械轮胎胎面和输送带覆盖胶等可提高产品性能。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。