火車進(jìn)站后, 火車頭開始放氣.After the train got to the station, the engine began to blow off.杜瓦微漏孔和真空室內(nèi)部材料放氣使杜瓦真空度下降.Leakage and outgas of dewar vacuum vessel also is analysed.注意: 在進(jìn)入拉削時(shí)一定要關(guān)閉放氣開關(guān).Notice: When broaching, make sure tha...