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...
By 1978, in the USA, the use of CFCs in aerosol propellants was banned.美国自1978年起禁止在喷雾剂压缩气体中使用含氯氟烃。This law closely resembles that obtained with conventional propellants.这种规律非常类似于用普通推进剂所得出的规律.The lighter version used liqu...
They have maintained their optimism in the face of desolating subjugation.面对遭征服的悲惨命运，他们保持了乐观的态度。The cold, misty air felt wonderful on his face.雾蒙蒙，寒冷的空气使他脸上感觉很舒爽。He will now face a disciplinary hearing for having an affa...
This allows the two cultures to intermingle without losing their separate identities.这使得两种文化能相互融合，却又不失其个性。Oil and water will not intermingle.油和水不相融。to intermingle with each other互相来往Tumor cells at the margin may intermin...