熔点

The results indicate that polyborazine precursor prepared at 150℃ for 10 h and propylamine/isopropylamine molar ratio 2:1, could possess nearly linear molecule skeleton and he prone to melt spinnability. When melt at 90℃, the precursor fibers are prepared with average diameter 10-20μm and BC1.27 N1.52 H structure. After curing process and sintered in NH3 at 1200℃, the near-stoichiometric BN fibers was obtained, which proved this precursor is apt for preparation of BN fibers.

结果表明，当正丙胺／异丙胺摩尔比为2：1，聚合温度为150℃，反应时间为10h时，合成产物具有近似线性分子结构，熔点为90℃，具有良好的成丝性，可获得平均直径10~20μm，组成为BC1.27N1.52H的先驱体纤维，先驱体纤维再经不熔化处理及1200℃氨气高温锻烧等工艺可获得近化学计量比的氮化硼纤维。

The free energy for PPS crystals formed during the crystallization isothermally from melt decreased by incorporating POI in to the matrix.

POI是PPS的增塑剂，成核剂和扩链剂，与POI共混使得PPS结晶速率增加，平衡熔点上升，表面折叠自由能降低。

The theory and experiment results all has verified that the melting point of polymer isdetermined by the lamellar thickness.

由于理论和实验都证明了高分子结晶的熔点是取决于晶片厚度的。

Lauryl alcohol maleic anhydride increases the stability of the blends while, at the same time, decreasing the melting temperature and glass transition temperature.

6马来酸单十二醇酯可提高共聚物稳定性，同时降低共聚物的熔点和玻璃化转变温度。

With keeping pH 11 and using manganous sulfate or ferrous sulfate as catalyst, the obtained LCVL was oxidized with air at 80℃ for 8 hours to get crystal violet lactone.

然后在过渡金属和有机氮化合物的存在下，在碱性溶液中，于70-80℃用空气氧化，将无色结晶紫内酯转变成结晶紫内酯，所得产物熔点为177-179℃，产率为90%左右。

Final product is confirmed by melting point measuration andMS.

产品Ce_4经熔点测定和质谱认证。

By means of the analyses of SEM and metallograph and physical tests,the microstructure and properties of the composites made from copper-coated-TiB2 have been studied.

1引言硼化物陶瓷具有极高的熔点、高化学稳定性、高硬度和优异的耐磨性，基于这些优点，成为复合材料强化物的首选材料之一。

After concrete structure is fired, the fire temperature can be judged by the analysis of the melting point of damage material, the surface color of concrete, the damage degree and the metallograph of reinforced bar.

混凝土结构遭受火灾后，通过对被燃烧物质的熔点，混凝土表面颜色、损伤程度以及钢筋的金相分析，可判定火灾的温度。

Samples of lactide with melting point 127℃ were conducted a quantitative analysis test by using non aqueous titration with sodium methoxide and Karl Fischer method.

用甲醇钠非水滴定法、卡尔－费休法对熔点为127℃的丙交酯样品进行了定量分析试验，测出残存的乳酸和水的质量分数分别为0.09％和0.07％左右，回收率分别为98.64％～101.2％和98.74％～101.1％。

Properties : White crystallization or powder , proportion 1.735 , melting point is 287 ℃, apt to dissolve in water , ethanol and propanone , aqueous solution is neutral , turn into the blood red sulphur cyaniding iron with molysite , reactionless with inferior molysite, salt function turns into dark blue sulphur cobalt cyanide, turn into white sulphur silver precipitating or black sulphur copper cyanide cyanide to precipitate with the silver salt or copper salt function with cobalt.

白色结晶或粉末，比重 1.735 ，熔点 28 7 ℃，易溶于水、乙醇和丙酮，水溶液呈中性，与铁盐生成血红色的硫氰化铁，与亚铁盐则无反应，与钴盐作用生成深蓝色的硫氰化钴，与银盐或铜盐作用生成白色的硫氰化银沉淀或黑色的硫氰化铜沉淀。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失