求翻译：跨度：汽机房跨度18m，除氧与煤仓间跨度9m，锅炉底层跨度22.5m，主厂房计入锅炉后部排烟除尘等占用场地，总跨度约110mm。是什么意思？

Span: the steam engine room span of 18m, the span 9m between the deaerator and coal bunker, boiler underlying span of 22.5m, the main plant are included in the boiler rear exhaust dust and other space occupied, the total span of about 110mm.

Span: 18 m span gas room, in addition to coal chamber oxygen span between 9 M, the boiler bottom span 22.5 M and the main plant at the rear of the boiler exhaust smoke, dust, and other premises Total span about 110 mm.

Span: Steam engine room span 18m, except the oxygen and the coal bin span 9m, boiler first floor span 22.5m, the main workshop includes behind the boiler to discharge fume the dust removal and so on to take the location, total span approximately 110mm.

Span: span of 18m of steam turbine House, with the exception of oxygen span of 9m with the coal bunker, boiler bottom span of 22.5M, the rear of the main building included in the boiler flue dust and other space occupied by, with a total span of about 110mm.

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