短语词组短语Blowoff cock 放泄旋塞blowoff pressure 吹除压力blowoff water 排污水surface blowoff 表面排污blowoff limit [热]吹熄极限emergency blowoff 紧急放水flame blowoff 熄火Blowoff device 送风装置blowoff pipe 排污管;吹泄管;排放管 返回 blowoff