熔融金属

The glass and crystalline glass-solders of Li2O-ZnO-SiO2 system were prepared by conventional melt technology. The various factors effecting on glass ceramics and glass were investigated,which include glass chemical composition and heat-treatment and so on. And then by means of XRD, DTA, IR and SEM, the structure and properties of the glass and glass-ceramic were studied. The coefficient of linear expansion , transform temperature and soft temperature wer measured. And then the factors that effect the mechanical strength of glass-ceramic were discussed and the fluxion property was determined and the crystallization course and mechanism were discussed, which can provide certain therial reference value for practice producing and glass seals to glass, ceramics and metal.

用高温熔融法制备了Li_2O-ZnO-SiO_2系统玻璃及其结晶型玻璃焊料，探讨了各种因素(包括玻璃组成、热处理制度等)对微晶玻璃的结构和性能的影响；利用X射线衍射分析、DTA、红外光谱分析以及扫描电镜等现代测试手段，对玻璃的结构与性能进行研究，测定了玻璃及微晶玻璃的线膨胀系数、转变温度和软化温度，同时对影响微晶玻璃的强度的因素进行了探讨，并对该体系玻璃的流散性进行了测定，对它的析晶过程和析晶机理进行探讨，为实际生产和与玻璃、陶瓷及金属封接提供了一定的理论参考价值。

On these grounds, a new method, the divided steping reduction, was put forword to prevent sticking phenomenon for pre-reduced fluidized-beds of smelting reduction, i. e. concentrate is reduced under the temperature and composition of gas first for the thick morphology of iron, to a certain metallized rate, and then for the whiskery morphology of iron.

据此，提出了一种新的旨在预防熔融还原预还原流化床粘结现象的措施——分段还原法，即先将铁精矿置于铁以致密状析出的温度和气氛下还原至一定的金属化率，而后再在铁晶须析出的温度和气氛下进一步深还原。

As board piece dive continuity, basin of the arc before slimy basin world appeared in, formed copper - lead - bed of zincic much metal.

早泥盆世，由于古亚洲洋板块的俯冲，在阿尔泰南缘形成了一系列陆缘断陷盆地，并伴随以铅、锌、铜、铁多金属为主的矿化；同时，俯冲的古亚洲洋板块发生部分熔融，形成了埃达克岩及和其有关的铜矿床。

Tape casting is a powerful method for the manufacture of carbonyl nickel green tape, which is sintered at a given condition and then used as the electrode for molten carbonate fuel cells.

其中制约MCFC商品化的最大障碍就是MCFC的NiO阴极在熔融碳酸盐中的溶解和金属镍在电解质基板中的沉积而造成的电池短路。

Metallic wire grating in terahertz frequency was designed and fabricated by femtosecond micromaching and sputtering technique.And the polarized transmission spectra of the gratings were characterized by terahertz time domain spectroscopy ,and the theoretical simulation based on FDTD method show a good agreement with experimental results.

结合飞秒微加工和磁控溅射技术，在熔融石英衬底上设计并制作了不同结构的太赫兹波段金属线栅，并通过太赫兹时域光谱系统研究了线栅结构对太赫兹偏振透射特性的影响，并用有限时域差分法对实验进行了模拟验证。

So the thickness of transporting metal piece should be raised up. If we choose copper as electricity transporting piece which has a low melting point, it is easy for melt copper to flow to inside tube.

在石墨管处使用低熔点的导电片铜时，熔融的铜易向石墨管内壁流动，将引起电流的持续下降，此处必须使用高熔点的金属如钼片予以隔绝。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。