纵向及环形焊缝应尽可能不防碍设备口、加强板、支承垫等。
Longitudinal and circumferential welded seams shall not interfere with nozzle openings, reinforcement plates and saddle pads, as far as possible.
其结构由若干环形一次性单元坐便垫所组成；
The structure is composed of a plurality of ring shaped portable unit toilet cushions;
借助于一个连续的有弹性的形环形密封垫，壳体紧贴在轧辊上。
With the use of a continuous elastic Gask-O-Seal, the shell is closely placed against the rolls and in the shell is mounted a rotatable brush.
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