"Lots of times, volcanic pumice originates as a flow [ of loose, gravel-like particles], and because of the heat and the weight, it becomes welded into solid rock," Bonis said. 博尼斯说:许多情况下,火山浮石大多是由(像沙砾一样松散的)流动性粒子形成的,它们在高温和重压下结合在一起,变成固体岩石。
In addition, under normal circumstances a good thermal conductivity and are based on copper heat sinks and a heavier weight. 另外,一般情况下导热性好的散热片都是采用铜制的,重量较重。
Heat Mirror? insulating glass has similar weight, thickness and mechanical performance compare with ordinary insulating glass. 热镜中空玻璃空具有与普通中空玻璃相似的重量,厚度和机械性能。
Its characteristics are: good heat dissipation, light weight, enough power, good stability and a broad range delicate, to restore the truth. 其特点是:散热好、重量轻、动力足,稳定性好,音域细腻宽广,还原真实。
Preliminary Study on Heat Treatment Weight Loss Characteristics and Corresponding Pyrolysis Products of LC 液晶热处理失重特征及其过程产物初步研究
Latent heat thermal storage has the advantage of large heat storage quantity per unit weight or volume and good chemical stability and safety, but when the phase changes the heat conductivity is poor at the interface of liquid and solid. 潜热储热一般具有蓄热量较大,化学稳定性好等优点,但相变化时液固两相界面处的传热效果差。
Research on the property of heat transmission of light weight coal refuse thermal insulation material 煤矸石轻质保温砖的导热性能研究
Heat generating and sealing cabin weight are decreased dramatically with simplify control system hardware structure. 通过简化控制系统硬件设计降低了控制系统的发热量、减少了密封舱的体积和重量;
The present paper reviews the researches on braking disc energy heat and reduction of disc weight for high-speed trains. 综述提高高速列车制动盘能量和降低盘重方面的研究成果。
The thermodynamic parameters and weight of the network were calculated on the bases of energy balance, heat transfer relation and the component weight relation. And influencing factors on the system weight were discussed. 从热平衡、传热及其系统重量关系式出发,计算出网络的结点热力学参数及网络系统重量,并对系统重量的一些影响因素进行了分析。
Sensible heat thermal storage has the advantage of good chemical and mechanical stability, but the heat storage amount per unit weight or volume is small, and temperature change is remarkable during heat charge-discharge process. 显热储热一般具有机械稳定性好、方便等优点,但蓄热量较小,并且很难保持在一定的温度下进行吸热和放热等特点。
A series of novel solid-solid phase transition heat storage polyurethanes with various molecular weight PEG based soft segments and MDI-BDO based hard segments were synthesized by two-step solution polymerization. 以不同分子量的聚乙二醇(PEG)为软段,MDI-BDO为硬段,采用两步法溶液聚合合成一种具有固-固相变储热性能的聚氨酯材料。
Authors account such effects for their intense scattering, so more pumping photons trapped by active molecule, and for the large vibrational heat content relative to their molecular weight, so the "bottleneck" effect can be decreased. 本文把这种作用归因于它们对泵浦光的强散射作用,从而使泵浦光被活性分子更多地俘获,以及相对于它们的分子量来说有大的振动热容量,从而减轻瓶颈效应。
Suggests that the width of air slot on the plate be equal or less than 1.28 times as much as the thickness of the plate in order to accelerate convective heat transfer and decrease its weight. 为便于散热和减小自重,建议遮阳板通气槽宽度小于等于1.28倍遮阳板的厚度。
The technology of passive heat transfer enhancement cannot only improve efficiency of heat exchanger, but also reduce the weight and volume of equipments. 被动式强化传热技术不仅可以提高换热设备的效率、减少设备的重量和体积,而且无需外加动力消耗,符合节能的要求;
The foam metal nickel has the advantage of good heat conductivity and the molten salt has the advantage of large heat storage quantity per unit weight or volume. 泡沫金属镍具有传热性能好,熔融盐具有蓄热量大、化学稳定性好等优点。
The humic acid pyrolytic properties observed by means of DTA and TG methods in different soils indicated that the humic acid from different soils showed similar heat effect peak and weight loss peak in DTA and DTG curves. DTA和TG法测定不同土壤胡敏酸的热分解特性表明,不同土壤胡敏酸的DTA、DTG曲线都有共同相似的热效应峰和失重峰。
The foamed alloy aluminum is a new functional and structural material, which possesses high strength, adjustable hole rate and characteristics like heat resistance, fire resistance, light weight, low price and simple manufacturing technology etc. 泡沫铝合金是一种新型的功能结构材料,具有机械强度高、孔隙率可调节、耐高温、不燃烧、重量轻、价格低廉和制造工艺简单等特点。
Determination of Influencing Factors of Total Heat Exchanger Efficiency with Weight Coefficient Method 权重系数法全热换热器效率影响因素判定
The effect of dosage of 810 ester on rigidity, tensile strength, breaking extension, rebound elasticity, heat weight loss, flow rate of fused mass were studied. 试验了810酯用量比对材料硬度、拉伸强度、断裂伸长率、回弹性、热失重、熔体流动速率的影响。
Studies on Statistics Model in Heat Consumption of Unit Weight of Ceramic Tunnel Kiln 陶瓷隧道窑单耗统计数学模型的研究
With a self-designed measuring method. we compared the sensational susceptibility to smell, sight, touch, hearing, heat, weight and balance of 127 schizophrenic in-patients and of 100 normal subjects. 参照《医学心理学》上的方法,设制了一套工具,对127名住院的精神分裂症病人和100名中学生的嗅、视、触、听、重量、温度及平衡觉的暗示性作了测量。
The extraction procedure, the treatment method during pro extraction and post extraction in the determination of crude oil in grain and oilseed with Soxhlet extraction were improved. The improved methods of heat extraction oil weight method and residual method and national standard method were also compared. 将粮食、油料脂肪测定方法的抽提过程和抽提前后采用的处理手段进行改进,改进法热浸提-油重法和残余法与国标法进行多方面比较对照实验。
EXPLORATIVE RESEARCH ON PRINCIPLE AND UTILITY OF A NEW SPACE PROPULSION SYSTEM Microwave plasma thruster ( MPT) is a space propulsion system that uses microwave to heat low molecular weight propellant gas to a high temperature. 微波等离子推进器的原理与应用研究微波等离子体推力器(MPT)属于微波电热推进器。
Carbon fiber and Carbon fiber reinforced composite materials have many Excellent performance, such as high strength, high modulus, temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, heat transfer, and small specific weight. 碳纤维及其复合材料具有高强度、高模量、耐高温,耐腐蚀、耐疲劳、抗蠕变、导电、传热、比重小等优异性能,在现代化工业发展中具有十分重要的作用。
Technologies of heat transfer enhancement, which can improve the efficiency of heat exchanger and reduce the weight and volume of heat exchange equipments, are always attracted by scientists and engineers. 强化传热技术,由于能使各种换热设备的效率提高、重量和体积减小,一直受到科技界和工业界的重视。
The paw withdrawal threshold to mechanical stimulation, paw withdrawal latency to heat stimulation, body weight and motor function were determined pre-and post-surgery. 在术前及术后不同的时间点测量大鼠后足机械刺激回缩阈值、热刺激回缩潜伏期、体重以及肢体运动功能的变化。
Fiber laser is widely applied in scientific research, military matters, medicine, industry and other fields based on fine Laser beam, high efficiency, stable system, good heat dissipation, small volume and light weight. 基于光纤激光器光束质量好、效率高、系统稳定、散热性好、体积小和质量轻等优势,它被广泛应用在科研、军事、医疗和工业等领域。
The silicone resin matrix composites will be the first choice for the wave transmission materials in intercontinental missile warhead and space shuttle, due to theirs low heat expansion coefficient and light weight, especially the properties of high temperature stability and dielectric. 硅树脂及其复合材料具有良好的高温稳定性和介电性能,且重量轻、热膨胀系数小,是航天飞机、洲际导弹雷达天线罩的首选材料。
How to reduce the heat exchange equipment the weight, heat exchange equipment volume and the consumption of energy have become the modern hot scientific research domain hot topic. 降低换热设备的重量、减少换热设备的体积、节能降耗等成为了现代热科学研究领域的热点问题。