锅炉壳体和蒸汽管无论怎样仔细密封，总有一些热泄出耗失。 收藏。
However carefully boiler casings and steam pipes are sealed some heat escapes and is lost.
由于壳体的防尘密封，确保了整体防爆性，增强了给料机的安全性。
Due to shell has good dust seal to guarantee whole body anti explosion and to strengthen safety of coal feeder.
为 了传送和储存目的，配料单元设置在密封的保护壳体的内部中。
The metering unit(s) is or are placed in the interior of the sealed protective housing for transport and storage purposes.
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