其次对于高压负荷开关及低压馈电开关部分存在的问题，则通过应用新型开关设备来解决。
Secondly, for some problems in high voltage switches and low voltage feed switches, new switching equipment is used to resolve the problem.
其次，较新的对象生存期较短，而较旧的对象生存期则较长。
Secondly, newer objects will have shorter lifetimes and older objects will have longer lifetimes.
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