Alexander Downer长唐纳;山大唐
Downer White标签
Oscar Downer标签
Barbara Downer巴巴拉下面
Downer Addition城市
Downer Oscar名称
John Downer标签
Downer Ralph名称
Downer Said唐纳说
Particle trajectory model is used to calculate the solids flow in three sections of the downer. Results indicate that, at the inlet of the downer, the solid concentration is high in the center area.
计算得到了下行段三个不同截面的气固流动分布状况,分布状况表明在下行床入口段固体颗粒集中在中心处附近,随着向下流动,固体颗粒扩散,中心处颗粒浓度降低,截面平均颗粒体积份额也降低。
参考来源 - CFD和电容层析成像技术及其在下行床的应用N-COUNT（可数名词） If you describe a situation as a downer, you think that it is very depressing. 令人沮丧的情况 [非正式][usu sing, 'a' N]
For divorced people, Christmas can be a downer.
对离异的人来说，圣诞节是个令人沮丧的节日。
[非正式]（） If you are on a downer, you are feeling depressed and without hope. 感到沮丧的 [非正式]
When I arrived, the team was bottom of the league and the whole place was on a real downer.
当我到达时，这个队伍在联赛中垫底，整个气氛令人感到沮丧。