1.前言许多实验室采用背对背(BTB)加速度计作实验室标准,这类传感器作实验室标准有一定的优点。它的主要优点是:它能够安装在振动台上,并且在它的上端直接安装被校振动传感器。这样设计的优点在于不需在振动台内安 1. Introduction Many laboratories use BTB accelerometers as laboratory standards. Such sensors have certain advantages as laboratory standards. Its main advantage is that it can be mounted on a vibrating table and the school-mounted vibration sensor mounted directly on top of it. The advantage of this design is that it does not need to be inside the shaker