For Valentine's Day, NBC Learn takes a look at the chemistry of chocolate, explaining why the treat is so irresistible thanks in part to its ideal melting temperature and mood-lifting compounds.
对于情人节,NBC learn 关注了巧克力中的化学,解释了我们对其如此难以抗拒的原因部分是因为它理想的熔化温度和情绪提升的化合物。
Nb-based alloys are important high temperature structural materials because of their high melting temperature, corrosion resistance, and high temperature strength.
铌及铌合金以其熔点高、耐腐蚀和良好的高温强度成为重要的高温结构材料。
At the same time, it is shown that the initial melting temperature was related not only to the rock composition, but also to the condition during the formation process.
同时,由实验表明,岩石初熔温度除与岩石成分有关外,还与岩石实际形成条件有密切联系。
Some of the useful properties of ceramics and glasses include high melting temperature, low density, high strength, stiffness, hardness, wear resistance, and corrosion resistance.
高熔点、低密度、高强度、高刚性、高硬度、高耐磨性和抗腐蚀性是陶瓷和玻璃的一些有用特性。
Results show that thickness of steel solidification shell decreases with higher melting temperature.
保护渣熔化温度越高,钢凝壳厚度越小。
The DSC results showed both the melting temperature and crystallization temperature of the grafting products were decreased.
DSC研究表明辐照接枝产物的熔融温度和结晶温度均降低。
For a metal heating at the same heating rate, its melting temperature will decrease with the increase of the rate of defect.
在相同升温速率下,随缺陷率增加,金属熔点有下降趋势。
The results show that when R2 increases in BF slag the viscosity and melting temperature firstly decrease, and then increase.
结果表明,随碱度增加,炉渣粘度和熔化性温度先下降后提高。
The melting temperature of PA6/PTFE blends increases with PTFE content, while the melting enthalpy decreases with PTFE content.
PTFE共混物的熔融温度随PTFE含量的增加而升高,熔融焓却随PTFE含量的增加而降低。
Finally the melting temperature ranges of different components in the sample are tested by a differential heat analysis scanner (DSC).
最后通过差热分析扫描仪(dsc)测试样品各成分的熔融温度范围。
The melting temperature and its range of the converter slag containing vanadium and titanium oxides (different contents) were measured.
测定了钒钛钢渣在不同组元含量条件下的熔化性温度及熔化区间。
The influence of melting temperature, melting time, crystallization temperature and cooling mode on form and size of nylon 66 was studied.
研究了熔融温度、熔融时间、冷却方式及结晶温度对尼龙66球晶形态和大小的影响。
If the nonmetallic inclusions in alloying steels are of low melting temperature, the fatigue life of steels can be significantly improved.
钢中非金属夹杂物绝大多数为较低熔点夹杂物,可以显著改善钢材的抗疲劳破坏性能。
Comparing with fluoride eutectic fluxes, it possesses the advantages as: low melting temperature, good wetting ability, easy to prepare, etc.
与氟化物共晶型钎剂相比,有熔点低、流动性好、制备方便等优点。
According to the result of the DSC test, the melting temperature range of the fiber became narrow as the increasing of heat treatment temperature.
通过DSC发现随着热处理温度的升高纤维的熔融温度范围变窄。
The molecular dynamics simulation method has been used to study the relation between the melting temperature and the cohesive energy of Pb nanofilms.
本文利用分子动力学方法研究了铅纳米薄膜的熔化温度与结合能的关系。
The copy principle of DNA is studied by using fractal and fractal dimension theory and hydrogen-bond melting temperature in BDNA copolymers calculated.
利用分形和分维理论研究DNA的复制机理并计算BDNA共聚物中氢键的解链温度。
The influences of lithia content on the melting temperature, mechanical properties and thermal expansion coefficient of low temperature frit were studied.
本文研究了氧化锂加入量对低温熔块的熔融温度、力学性能、热膨胀系数的影响。
The former is characterized by lower viscosity , lower crystallization temperature, lower softening and melting temperature, proper basicity and higher melting rate.
薄板坯连铸保护渣应具有较低的粘度,较低的结晶、软化及熔融温度,合适的碱度以及较快的熔化速度。
The coefficient of linear expansion of the body and glaze, the melting temperature range, the whiteness, the microhardness and the heat stability of glaze were tested.
测试了基体和熔块的线膨胀系数、釉的熔融温度范围、釉面的白度、显微硬度和热稳定性等性能。
With increasing melting temperature, the cold crystallization peak temperature increases, the crystallization peak strength of PEEK weakens and the peak width increases.
熔融温度升高时,聚醚醚酮的结晶峰强度减弱,峰宽增加;而冷结晶峰温度提高。
Melting temperature of the modified PVA indicated that the melting temperature of PVA with the alcoholysis of 88 % increased with the increasing of the molecular weight.
改性pva塑化温度的研究表明,醇解度为88%的PVA,随相对分子质量的增加塑化温度升高。
It is used to adjust content of manganese and copper element in different brand aluminium alloys as substitute of intermediate alloy, which can reduce melting temperature.
调整不同牌号铝合金中锰、铜元素的含量,用来代替中间合金,可降低熔炼温度。
After the ultraviolet irradiation, the crystal shape and distance of the crystal plane of LLDPE remain unchanged. However, the melting temperature and crystallinity decrease.
紫外辐照后,LLDPE的晶型和晶面间距未发生变化,但是其熔融温度和结晶度下降。
This paper studied the melting characteristics of binding phase in high-basicity sinter and got the relationship between the melting temperature and binding phases composition.
本文以高碱度烧结矿中的铁酸盐黏结相为研究对象,考察了黏结相的熔化特性随黏结相组成的变化规律。
By introducing a shape factor, the functions on cohesive energy and melting temperature are developed which can describe thee effect of size and shape of metallic nanoparticles.
通过引入描述纳米微粒形状效应的形状因子,建立了金属纳米微粒尺寸形状效应的结合能函数与熔化温度函数。
This paper synthesized a series of zinc-doped lithium niobate polycrystals, and measured the melting temperature and Curie temperature of LiNbO3:Zn versus the zinc concentration.
本文配制了系列掺锌铌酸锂多晶料,测量了掺锌铌酸锂的熔化温度及居里温度随掺锌量的变化。
This paper synthesized a series of zinc-doped lithium niobate polycrystals, and measured the melting temperature and Curie temperature of LiNbO3:Zn versus the zinc concentration.
本文配制了系列掺锌铌酸锂多晶料,测量了掺锌铌酸锂的熔化温度及居里温度随掺锌量的变化。
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