简述用于风力发电机组故障诊断的加速度传感器的应用特点。
对齿轮箱进行振动信号测试时,选择低频加速度振动传感器。由于发电机组处于高旋转速度,需要使用通用型加速度振动传感器(频率范围0.5Hz~15kHz)。
Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
( ) deeds are always encouraged in all cultures. (hero)