为减少磨损，沸腾炉内蒸发管采用加焊半圆形钢板防磨。

Semicircle steel sheets were welded on the wall of evaporation pipes in fluidized bed roaster for anti-abrasion.

youdao

为减少磨损，沸腾炉内蒸发管采用加焊半圆形钢板防磨。

Semicircle steel sheets were welded on the wall of evaporation pipes in fluidized bed roaster for anti-abrasion.

youdao