一种测量参考点。参阅benchmarktest。
A point of reference from which measurements can be made.
电路中的一个参考点，该点电位作为标称的零电位，其它所有电位均相对于该点而定。经常，但并非总是，将该点直接连接到地。作为动词，指连接到地线上的过程，也称作接地。
A point considered to be at nominal zero potential and to which all other potentials in the circuit are referred, often, but not always, connected to the actual surface of the earth; as a verb to connect to a ground. Also called earth.
参考词对于找到其他词或信息提供参考点的词
A word used as a reference point for finding other words or information.
