词汇	锅炉安全阀
释义	锅炉安全阀医boiler safety valve
随便看	negative feedback loop negative externality negative external value negative eyepiece negative face negative facial expression negative fact negative factor negative factorial multinomial distribution negative factors negative features negative feature words negative feed negative feedback negative-feedback negative feed back negative feed-back negative-feedback adjustment negative feedback amplification negative feedback amplification circuit negative feedback amplifier negative-feedback amplifier negative feedback amplifier circuit negative feedback circuit negative feedback circuits