The exhaust channel unit has an annular shape and is coupled to the upper end of the main body.
排气通道单元具有环形形状并且被连接到主体的上端。
Compared comprehensively, enclosed supports are better than non-enclosed supports; supports of square annular shape or "u" shape are better than supports of semicircle arch.
综合比较来看，封闭式支架要优于不封闭支架；马蹄形或方环形支架要比半圆拱等支护形式好。
The result shows that thecorrugation and annular flow field is closely related with the shape of flow channel.
结果表明，波纹环空流场特性与流道的形状有密切关系。
Results show that with the same oil amount, the new oil supply style needs a lower gas velocity in the inlet to shape the annular flow, and the oil drops will not appear in air flow.
在相同供油量情况下，新供油方式形成环状流需要的入口气相速度低，且气速增大时一般不会形成夹带液滴，能够实现较好的环状流流型。
Change shape was mainly annular scotoma and diffuse damage, change degree was mainly light and medium damage.
主要为环状暗点和弥漫性损害，属轻、中度改变。
Change shape was mainly annular scotoma and diffuse damage, change degree was mainly light and medium damage.
主要为环状暗点和弥漫性损害，属轻、中度改变。
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