使用终端电阻也有不利的一面，它（额外地）加重驱动器的负载，增加装置的复杂性，改变偏置条件和造成系统日后修改困难更大。

There are disadvantages of termination as well. Termination increases load on the drivers, increases installation complexity, changes biasing requirements and makes system modification more difficult.

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