The outside diameter of the pipe is （） the diameter of the bore of the piston rod， the result being that an annular space formed between the piston rod and the pipe.
The outside diameter of the pipe is （） the diameter of the bore of the piston rod， the result being that an annular space formed between the piston rod and the pipe.
过冷液体在加热的管道内部流动，可能存在的流态有 ( ) A: 泡状流(Bubble Flow) B: 塞状流(Slug Flow) C: 环状流(Annular Flow) D: 单相流(Single phase Flow)
过冷液体在加热的管道内部流动，可能存在的流态有 ( ) A: 泡状流(Bubble Flow) B: 塞状流(Slug Flow) C: 环状流(Annular Flow) D: 单相流(Single phase Flow)
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