Trilobal polycarbosilane(PCS) fibers were prepared by melt spinning PCS precursor through Y-shaped spinnerret.
以聚硅烷(PCS)为原料,经不熔
和烧成制得三叶型
硅纤维。
Trilobal polycarbosilane(PCS) fibers were prepared by melt spinning PCS precursor through Y-shaped spinnerret.
以聚硅烷(PCS)为原料,经不熔
和烧成制得三叶型
硅纤维。
Rare earth can influence for shape size,distribution and quantity of niobium carbonide,decrease activity of carbon and niobium i...
稀土铌形
、大小、分布、数量有影响,可降低
、铌活度,阻碍
铌在奥氏体区的析出。
Thermoresistant saggers containing silicon carbide and granular filler were produced through slip casting in plaster mould.
用石膏模浇注法生产出了含硅和粒状填料的耐热匣钵。
This paper describes the cutting test of hard alloy tip produced by using the new carbusintering technique.
采用烧结
新工艺制取的硬质合金刀片进行了切削试验。
"aragonite: an orthorhombic mineral form of crystalline calcium carbonate, dimorphous with calcite."
文石结富钙
物的一种正交
矿物,具有方解石的两种
。
The carbonization of exrtacting constituents of preheated Shenfu noncoking and Liulin dominant coking coal has been studied.
预热神木不粘煤及柳林主
煤中不同溶剂抽提组分的
性分别进行了比较研究。
"carburize:To treat, combine, or impregnate with carbon, as when casehardening steel."
使渗,
:使与
一起处理,使与
混合或使充满
,如将钢的表面粹火硬
.
Solo, free of the carbonite and suffering blindness from hibernation sickness, wildly swung a vibro-ax into an inattentive Fett's rocketpack.
韩在被过后承受失明和冬眠症状,大力挥舞一只震动斧时意外敲进波巴的喷射背包。
As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound.
异氰基合物进一步二聚成二苯基
二亚胺,后者又聚合生成含氮杂环的多环芳烃。
The benzene ring and alkene structural group are much more stable than structural group of sulfoacid for the carbonifying process of polystyrene.
在过程中,聚苯乙烯阳离子交换树脂的苯环结构和烯烃基团比磺酸基团稳定。
Although PM has solved the problem of carbide segregation and crassitude fundamentally, it has complicated technics and extortionate cost, so restricts its application.
粉末冶金虽然从根本上解决了物偏析和粗大的问题,但其工艺复杂,成本过高,应用受到限制。
Transformation mechanism of carbides and their effect on the stress rupture property were investigated in a Ni-base single crystal superalloy with microcontent of carbon.
研究了一种含微量(0.015%)的镍基单
高温合金在热处理和持久过程中的
物演
机制以及各种
物
合金持久性能的影响。
The crack initiates at stress concentration point in the root of weld, where has much more martenite, carbide and inclusion, and the serious hydrogen segregation.
裂纹均在焊缝根部应力集中处萌生,该处马氏体含量比较大,物及夹杂物较多,氢的偏聚现象严重。
The catalysts on studying can divide into two kinds: the transition metal bifunctional catalysts and the nitride, carbide and oxycarbide catalysts of transition metals.
目前,正丁烷脱氢异构催剂可以分为两类,过渡金属双功能催
剂和过渡金属氮
物、
物和
氧
物催
剂。
It holds that main causes promoting crack on martensite stainless steel are gross martensite and crystal boundary carburet and secondary phase distributed along crystal boundary.
文章认为,粗大的马氏体组织、界
物以及沿
界分布的“第二相”组织是促使马氏体不锈钢产生裂纹的主要原因。
It is proved that the pressmark of tooth root, the state of carbide and remanentelements in the material have different effects on the toughness of POwer hacksaw blades.
结果证明,机用锯条的分齿压痕、基体物状况以及材料中的残存元素等
机用锯条的韧性有不同程度的影响。
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