Rationalization: Conduction will be the transfer of heat through a solid substance. When one particular Portion of an item is heated, the heat travels as a result of the material to other parts.测试键盘是一个简单而艰苦的过程。为了对所有按键进行全面测试，需要时间和最大的谨慎。如果在测试后发现故障，