熔點低的 的英文怎麼說
中文拼音 [róngdiǎndīde]
熔點低的
英文
low-melting-
Aliphatic polyesters are not used for fiber production, because of their low melting points.
脂肪族聚酯沒有用來生產纖維,可能是熔點低的緣故。The results show that there is anomalistic crystal whose size reaches nanometer grade in fine pvc ; the crystal structure is damaged by jet - milling, which induces the melting point of nanocrystal pvc decreases from 210 to 128. the nanocrystal pvc induces the decrease of plasicizing time and equilibrium torque and the increase of maximal torque, which show that the nanocrystal pvc have self - plasticization in pvc composites
通過sem 、 tem 、 ftir和dsc測試表明:氣流粉碎制得的pvc微粉中具有不規則納米晶體;氣流粉碎破壞了pvc的晶體結構,使納米晶pvc的熔點從210下降到128 ;納米晶pvc使體系塑化時間、平衡轉距的降低、最大轉距升高,具有自增塑作用。By the methods of epn ( electronic probing needle ) 、 sem and xed, the formation mechanisms of the wear - resistant composite layer are studied, the results indicated that, molten iron has infiltrated into the alloying layer under capillary action. this caused ht powder, whose fusion point is low relatively, to be surperheated and formed a surface composite layer
利用電子顯微鏡及x射線衍射等試驗方法,研究了復合層形成機理,研究表明,復合層是在毛細力作用下,鐵液被吸入合金層中,致使低熔點ht粉過熱熔化而形成的,並與母材是冶金結合。The main results are shown as follows : 1. bt _ 4 doped with cuo could be sintered in a lower temperature, because cuo has a low melting point. there isn ’ t any other phase in the samples. the dielectric properties decreased because cuo was non - crystalloid
本人工作的主要研究成果如下: 1 . bt _ 4摻雜低熔點的cuo能降低樣品的燒結溫度,沒有其他相生成,燒結后cuo以無定形態的形式存在,導致樣品介電性能降低。The result shows that all these system are simple eutectic, at the same time, the entropy of phase change of every system in the eutectic point is determined by using differential scanning calorimetry ( dsc ) on the basis of experimental research, through the improved one - parameter margules equation by introducing a new variable temperature, the improved equation was designed to compute solid - liquid equilibrium
測定結果表明,這幾組體系均為簡單低共熔體系;同時利用差熱掃描量熱法( dsc )對上面各組體系低共熔點處的相變焓進行了測定。在實驗研究的基礎上,通過改進單參數margules方程並引入新的變量溫度,達到了將此方程用於固液平衡計算的目的。This article choosed out organic phase change materials, and, the solid - liquid - equilibrium of eleven binary system including fatty alcohol / fatty acid, n - octadecane / fatty acid, n - octadecane / fatty alcohol system were determined by cooling curve, and, t - x phase diagrams of these systems were drawn. the result shows that all these systems are simple eutectic, at the same time, the entropy of phase change of every system in the eutectic point is determined by using differential scanning calorimetry ( dsc ). and n - octadecane / fatty acid systems were calculated theoretically
本文初選出部分有機相變貯能材料,採用步冷曲線法測定了12醇-羧酸系列、 18烷-羧酸系列、 18烷- 12醇體系共11組體系的二元固液相平衡關系,繪制了這11組體系的t - x相圖,測定結果表明,這幾組體系均為簡單低共熔體系;同時利用差熱掃描量熱法( dsc )對上面各組體系低共熔點處的相變焓進行了測定;並對18烷-羧酸系列進行了熱力學理論預測。The qitaihe coal resources isadvantageous, the coal field total area 8, 000 square kilometers, haveverified the geological reserve 1. 7 billion tons, the prospectivereserves 4. 2 billion tons, the coal plant completely, has the cokingcoal, 1 / 3 coking coal, the gas coal, the anthracite and so on 10varieties, by coking coal primarily ; excellent in quality, has theespecially low phosphorus, especially low characteristic and so onsulfur, high heat value, high ash melting point, high silicon content, most is suitable for the coal chemical industry product thedevelopment, is national one of three big protections mining rare coalfields, is the heilongjiang province most important anthraciteproduction base, also is the national important coking coal and thenortheast area biggest high quality coke production base
七臺河煤炭資源得天獨厚,煤田總面積8000平方公里,已探明地質儲量17億噸,遠景儲量42億噸,煤種齊全,有主焦煤、 1 / 3焦煤、氣煤、無煙煤等10個品種,以主焦煤為主;品質優良,具有特低磷、特低硫、高發熱值、高灰熔點、高硅含量等特點,最適于煤化工產品的開發,是全國三大保護性開采稀有煤田之一,是黑龍江省最重要的無煙煤生產基地,也是國家重要的主焦煤和東北地區最大的優質焦炭生產基地。Some other defects in castings are well - defined cracks and hot tears that develop during solidification, under combination of stress concentration from uneven contraction and the metal ' s low strength at near - melting temperatures
鑄件內部的其它一些缺點是,凝固過程中,在不均勻收縮造成的應力集中和接近熔點溫度下金屬的低強度的綜合作用下,出現的清晰裂縫和熱撕裂。Standard specification for low melting point alloys
低熔點合金的標準規范Rapid growth of “ mother dendrites ” in a given location of a melt at just below the liquidus temperature, that growth being the result of rapid heat extraction from the melt, or from recalescence
在特定的熔點,以低於液相線的溫度快速生成「母晶枝」 ,這是使熔融金屬或復輝快速散熱的結果。5, both melting point ( tm ) and isotropization temperature ( tj ) of all the three series compounds change regularly with the carbon numbers of the end alkoxy group increased. there is a gradual increase in smectic phase length and in the smectic - nemetic transition temperature. at the same time there is a gradual decrease in nemetic phase length
五,三個類型化合物16ia至16id 、 16ila至16lid 、 17ia至17id 、 17ila至17lid 、 18ia至18id和18ila至18lid的熔點和液晶態的清亮點均化合物分子中末端烷氧基增大逐漸降低;近晶相的溫度范圍和近晶相一向列相轉變溫度逐漸增大,而向列相的溫度范圍遞減。Cold shots develop from low casting temperature, and dirt spots result from pickup of sand or slag by molten metal
較低的鑄造溫度會形成冷疤,熔化金屬出現的沙粒或爐渣的累積會導致污點。Melting point of nylon 11 blend alloy decreases as function of compatibilizer, and make clear that crystalline integrity of nylon 11 increases
尼龍11合金的熔點隨著相容劑的加入而降低,表明了其結晶的不完整性增加。The crystallization and melting behavior of mellocene - catalized branched and linear polyethylenes of low molecular weight was studied. it was found that the crystalline lattice of branched polyethylene is larger than that of linear polyethylene because of the existence of branched chains. the melting behavior of branched polyethylene is similar to that of linear polyethylene since the branched chains can not enter the lattice. however, the crystalline behavior of low molecular weight branched polyethylene is the same as that of high molecular weight linear polyethylene, but different with that of low molecular weigh linear polyethylene. kinetics theory analysis evidenced that the transition temperature of growth regime of the branched polyethylene is about 20 lower than that of linear polyethylene with the same molecular weight. it may be attributed to the existence of short branched chains
研究了金屬茂催化的低分子量支化聚乙烯和線性聚乙烯的結晶及熔融行為,發現支化聚乙烯的結構與線性聚乙烯相同為正交結構,但晶格略有膨脹.支鏈的存在對熔融行為影響不大,兩種聚乙烯的熔點均隨結晶溫度的升高而非線性增加,表現出低分子量樣品的共同特徵.但支鏈的存在對結晶行為卻有很大的影響,主要是由於支鏈的存在降低了晶體的結晶速率從而影響結晶過程,使得低分子量的支化聚乙烯的結晶行為與高分子量線性聚乙烯的結晶行為相似而與低分子量的線性聚乙烯不同.動力學分析表明,低分子量的支化聚乙烯的結晶生長方式的轉變溫度比同等分子量的線性聚乙烯降低了約20Preparation, structure and properties of hdpe ~ g ~ aa / mmt nanocomposites melt grafting reaction of hdpe with aa was performed in thermohaake rheomix and hdpe - g - aa with high grafting degree and high grafting efficiency was prepared. the change of torque indicated that the graft copolymerization was existed during melt compounding. the extent of grafting was analyzed by ftir and element analysis
在hdpe中只加過氧化二異丙苯( dcp )時,由於發生交聯反應而使平衡扭矩明顯增加,熔點和結晶度降低,加入aa后, aa與hdpe的接枝和hdpe自身的交聯並存,前者對後者有抑制作用,從而使扭矩下降,熔點和結晶度部分恢復。It has a broader absorption band at 808 nm which is emitted by laser diode ( ld ). therefore, nd : cngg is suitable for ld pumping, the ld pumped all solid - state lasers can be made by using nd : cngg. in this study, nd : cngg single crystals of 25mm in diameter and above 80mm in length were successfully grown by the automatically pulling method from the melt
摻釹鈣鈮鎵石榴石(簡稱nd : cngg )是一種新型激光晶體,該晶體熔點低( 1470 ) ,具有無序結構,在通用的808nm半導體激光二極體( ld )發射波長區有寬吸收帶,因此很適合ld泵浦,可做成ld泵浦全固態激光器。The physics model was established to deduce the relationship of different classifying gear speeds and melting point on the base of the broken theory and the broken process of pvc. it explained that the melting point of nanocrystalline pvc was low. therefore the effect of nanocrystal was proved in theory
最後通過引入破碎理論針對pvc的破碎過程,建立物理模型推導出分級輪旋轉速度與晶體熔點的關系,解釋納米晶pvc熔點低的原因,從而從理論上探討了pvc的納米晶效應。The tm and tj of the compounds 17 ii synthesized from the higher tm amdb15c5 is higher than those of compounds 171. it was found that the changes of the liquid crystal phase have corresponding relationship to the photos of all three series of compounds separately
還發現由熔點高的二氨基二苯並15冠5合成的化合物17ii的熔點和液晶態的清亮點高於山熔點低的二氨基二苯並15冠5合成的化合物171的熔點和液晶態的清亮點。Much attention has been paid on pure or doped zirconia thin films because of their high melting point, low heat conductivity, high ionic conductivity and chemical durability. in the case of metal - oxide - semiconductor ( mos ) devices and high - temperature superconductor ( hts ) wires, zirconia epitaxial thin films are promising buffer layers and have been intensely studied in the past two decades
純的或摻雜的氧化鋯薄膜因其高熔點、低熱導率、高離子導電能力和高溫化學穩定性而受到相當的重視,而且氧化鋯外延薄膜在金屬氧化物半導體( mos ) 、高溫超導帶材等領域的應用受到越來越多的關注。The long - branched polyethylenes made from these catalytic systems had the characteristics of low melt point, low density, narrow distribution of molecular weight
幾種復配體系所得到的聚合物具有熔點低、密度低、分子量分佈窄等特點。分享友人