过熔

The Laser Raman Microprobe study of these quenching melts has obviously shown that within the high frequency region (900~1200cm-1), the higher the pressure, the smaller the frequency of T-Onb symmetry and antisymmetry stretching vibration.

其激光拉曼微探针研究表明：随压力增大，T-Onb在高频区(900~1200cm-1)的对称和反对称伸缩振动频率明显减小；过铝质熔体中存在六配位铝，且随压力增大，铝的配位数可能有从四配位向六配位转化的倾向。

Safety Devices Protection against excessive temperatures is provided in part by plugs filled with fusible metal which melt at about 212°F.

对过高温度的安全装置保护部分由填充熔点约212°F的易熔金属的保险塞提供。

The fusible metal prevents premature rupture disk failure from momentary over pressurization and also

易熔金属防止了由于瞬间过压造成的破裂盘的太早失效。

If a fire occurs, the fusible metal yields or melts and cylinder overpressure caused by the heated gas is relieved by the bursting of the rupture disk.

如果起火，易熔金属变形或熔化；通过破裂盘的破裂释放由被加热的气体造成的过压。

The fusible metal prevents premature rupture disk failure from momentary over pressurization and also protects the disk from external corrosion which could cause premature failure of the rupture disk.

易熔金属防止了由于瞬间过压造成的破裂盘的太早失效。它还防止了导致破裂盘的太早失效的外部侵蚀。

In low voltage threephase AC circuits, the breakers, starters and knifeblade fuses with different number of poles were used for electrical isolation, shortcircuit, overload and groundfault protection.

在低压交流三相线路中，往往需要根据负荷情况或线路的保护要求设置不同极数的断路器、起动器或刀熔开关，以用作线路的电气隔离、短路保护、过负荷保护、接地故障保护、防电击。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。