The lighter version used liquid hydrogen, the heavier used hypergolic propellants.较轻的推进器采用液态氢, 较重的采用自燃推进剂.Pressure - fed engines are particularly susceptible to dissolved gas in the propellants.挤压 式 发动机对推进剂中溶解的气体特别敏感.Thi...
我把桌子弄歪了,玻璃杯掉了下来.I tipped the table and the glasses fell off it.孩子们弄歪了桌子,杯子掉了下来.The children tipped the table and the glasses fell off.学童甲惶恐地答道: “不是我弄歪的! ”Ground of schoolchild armour terrified answers: Not be my warpwarp...