求翻译：有单级单吸、两级单吸悬臂式、单级双吸悬臂式、单级双吸、两级双吸两端支承式和两级单吸两端支承式六种结构型式是什么意思？

Single-stage single-suction, two single-suction cantilever cantilever, single-stage, single-stage double suction double suction, the two pairs suction between bearing and two single-suction between bearing six structural types

There is a single-stage single-suction, two-stage single-suction cantilever-style, single-stage, Double suction cantilever-style single-stage, double-suction, two-level two-double suction support-and two-stage, single suction both ends support-structure type 6

Has single stage single suction, two level of single suction cantilever, the single stage double attracts the cantilever, the single stage double attracts, two levels double attracts the both sides supporting type and two level of single suction both sides supporting type six kind of structure patte

Single-stage single-suction, two stage, single suction and cantilever-type single-stage double-suction, cantilever, single-stage double-suction, two-stage double-suction supported at both ends and two-stage, single suction supported at both ends of the six structural type

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