短語(yǔ)詞組短語(yǔ)vacuum relief cracking pressure 真空安全開啟壓力high cracking pressure 氣動(dòng)軟管;擠出級(jí)pressure relief cracking pressure 減壓裂化壓力cracking pressure of valve 閥開啟壓力bypass valve cracking pressure drop 旁通閥開啟壓降high pressure hydrogenation cracking 高壓加氫裂化 返回 cracking pressure