Internal construction assures that arc, plasma, and vapor are contained within the fuse package during overload current conditions.
内部结构可确保电弧，等离子，和蒸汽在过载电流的条件下都包含在熔断器包。
2
Transpedicular screw internal fixation through posterior approach is helpful to fuse the grafted bone, reconstruct the cervicothoracic spinal column and maintain its stability.