nozzle cooling meaning in English

喷管冷却
喷嘴冷却

The mathematical model is more all - around and the calculation condition is approximate to production condition . the interfhce of the software is fliendly , the data input and modification are convenient and calculating time is short by means of the htc - 202 testing eqyipment of nozzle characteristic made in chongqing university , the nozzle cooling state and hot state characteiistic is systematically tested for the 48 kinds of nozzle cmlport and homemade nozzle ) of 1930 caster in bnosteel
针对宝钢1930铸机现用的24种国产喷嘴和同型号进口喷嘴，利用重庆大学研制的htc - 202型喷嘴性能测定仪对喷嘴性能进行了系统的测试，得到了3万多个实验数据，对测试结果进行分析，并得到仿真计算所需的边界条件? ?水流密度和传热系数的表达式。