annular shape massif 环状岩体
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。
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