refluxn.逆流；退潮v.(使)回流reflux condensing tube回流冷凝管reflux at tower bottom塔釜回流reflux fermented grains回醅Reflux of gastric fluid鼻饲方法reflux cooler digestion冷凝回流消解reflux to product ratio回流系数reflux extraction flowsheet回流萃取流程Reflux gastro - esophagltis胃食管反流病Reflux diagnostic questionnaire反流性疾病诊断问卷reflux circulation fluidized bed technology流化床技术