对陨石球粒质地的研究证实，它们的冷却速度相当快，短则几分钟，长则数小时，因此形成陨石球粒的高温活动肯定是局部的。
Study of the textures of chondrules confirms that they cooled rather quickly, in times measured in minutes or hours, so the heating events that formed them must have been localized.
会影响熔体的流动性和冷却速度。
认为冷却速度过快是产生冷裂纹的主要原因。
Fast cooling speed was the main reason of generating cold crackle.
花朵，草，树木和石头之类的物体的冷却速度比空气快。
Objects such as flowers, grass, wood and stone cool faster than the air around.
利用差热分析法测定了试样在相同冷却速度下的过冷度。
The DTA method was employed to measure the undercooling of samples during solidification.
提高冷却速度和降低终冷温度可以增加针状铁素体的比例。
The ratio of acicular ferrite may increase by raising cooling speed and decreasing final cooling temperature.
选择不同的加载温度和冷却速度可以达到组织细化的目的。
The grain of armor steel can be refined by choosing different loading temperature and cooling velocity.
结果表明，不同冷却速度的铸造合金锭具有不同的结晶组织。
Experimental results showed that the crystalline structure of the ingot is different with different cooling rates.
其成型工艺参数包括冷却速度、成型压力、成型温度、保温时间。
The processing parameters of PEEK composites include cooling rate, forming pressure, forming temperature and the holding time in melt.
由这个公式和临界冷却速度还能决定出非晶态合金丝带的最大厚度。
The maximum thickness of amorphous alloy ribbons can also be determined by this formula and the critical cooling rate.
研究了经40%热变形后不同冷却速度下高碳铬铸钢的组织和性能。
The influence of cooling rate after 40 % hot deformation on structure and properties of high carbon chromium cast steel was studied.
利用焊接时的加热使水汽化，不仅使焊道而且使热影响区的冷却速度减慢。
Using the heat of welding to vapour water, cooling rates are lowered on the weld bead and heat -affected zone.
影响细化效果的主要因素有：加热速度、保温时间、冷却速度和循环次数。
The main factors that affect the grain refinement are heating and cooling rate, holding time and cycle index.
试验研究了开箱温度和冷却速度对低、高温时效型合金时效硬化效果的影响。
The effects of opening flask temperature and cooling rate on low and high temperature age-hardening alloy casting are tested and studied.
影响铸铁碳原子析出形式的因素有：合金因素、冷却速度及熔液的核心状况。
The factors influencing precipitating type of carbon atom in cast irons include: alloys factors, cooling rate and nucleus conditions of the melt.
结果表明，由于材料中存在长条状夹杂物及淬火冷却速度过快导致螺母开裂。
The result indicated that crack was caused by lath-shape inclusion in the material and high quenching rate.
研究了锻造后的冷却速度对T10钢等用球化退火加热温度和保温时间的影响。
The influences of cooling rate after the forge on the heating temperature and time of apheroidized annealing of steel T10 was studied.
用磁秤模拟方法研究了冷却速度和过冷温度对镍铬钢排氢速度和排氢量的影响。
The effect of cooling rate and undercooling temperature on the rate and amount of dehydrogenation was studied by magnetic balance simulation method.
采用悬浮浇铸工艺并控制冷却速度成功地得到了钢颗粒增强纯铜基铸造复合材料。
Steel grain-reinforced pure copper cast composite was gotten successfully by suspension casting process and controlling the cooling rate.
本文分析了轧制温度、终冷温度、冷却速度以及微合金化对钢筋组织、性能的影响。
The influence of rolling temperature, final cooling temperature, cooling speed and micro-alloying on microstructure and properties were investigated.
通过改进焊接工艺来降低冷却速度和采用低氢型焊条等措施来控制焊接冷裂纹的产生。
Measures were taken to prevent welding cold cracking such as improve welding technology by decreasing cooling speed and adopting low-hydrogen electrode, etc.
结果表明：随着冷却速度的增大，相变开始温度和结束温度均降低，晶粒明显被细化。
The results show that, when cooling velocity increases, the beginning temperature and the finishing temperature of phase transformation are both decrease, the grain is obviously refined.
用数学回归的方法得到了AZ91镁合金的凝固冷却速度与二次枝晶间距的定量关系式。
The quantitative relationship between secondary dendrite arm spacing and solidification cooling rate of AZ91 was obtained by regressive analysis.
在感应淬火中，通过改变加热时间、加热功率和冷却速度可以改变淬硬层深度和硬度梯度。
The hardening case depth and hardness curve can be changed by adjusting heating time, heating power and cooling speed during induction hardening.
通过控制环境温度和冷却速度，模拟厚大断面球墨铸件凝固过程温度场的分布和变化规律。
The temperature distribution field and its variation rule was being simulated by controlling environmental temperature and cooling rate.
利用传热学原理估算了带钢连续退火生产中采用氢气和氢气加雾化水冷却介质的冷却速度。
The strip cooling rate with hydrogen and hydrogen plus water spray on continuous annealing line is estimated according to the heat transfer principle.
节约不仅体现在金属的使用上，而且体现在运输，甚至在冷却过程中：罐身越薄冷却速度越快。
That means savings not only on the metal itself but also on transport and even cooling: thinner cans chill faster.
随着预热温度的提高，电阻峰值也相应增大，但是样品下表面的热导出率下降，冷却速度下降；
With preheating temperature enhancing, the peak value also increase, but cooling velocity decreases, resulting from the decrease of heat conductivity of sample lower surface.
结果表明在相当大的冷却速度范围内，可获得稳定体积百分含量的细片状珠光体加铁素体组织。
The result shows that in a great scope of cooling rates, constant percentage of fine pearlite and ferrite can be obtained.
结果表明在相当大的冷却速度范围内，可获得稳定体积百分含量的细片状珠光体加铁素体组织。
The result shows that in a great scope of cooling rates, constant percentage of fine pearlite and ferrite can be obtained.
应用推荐