尝试翻译下面文字段落:基尔霍夫定律 Such a relation is said to be based on the topology of the network. Kirchhoff's Current and Voltage Laws are laws that are based on the connective features of a netowrk. These laws say nothing about the elements themselves. Kirchhoff's Current Law (KCL) Kirchhoff's Current Law is based on the law of conservation of charge, which requires that the algebraic sum of charges whithin a system can not change. An alternative form of KCL: The sum of the currents entering a node is equal to the sum of the currents leaving the node. Kirchhoff's Voltage Law (KVL) Kirchhoff's Voltage Law is based on the priciple of conservation of energy which may be interpreted as Sum of valtage drops = Sum of voltage rises This is an alternative form of KVL.