Не подскажете как перевести это сочетание слов? Графика, рисунка, схемы - ничего нет, к сожалению.

Вот контекст:

Brief Introduction of Construction
1.1 The inflatable life raft consists of upper & lower buoy tubes canopy arches, and floor, besides the above (see Fig.l).
1.2 The cross section of upper & lower buoy tubes is round. The vertical views of the tubes are regular multi-side form, round form and non-regular forms.
1.3 The upper buoy tube and canopy arches form an individual gas cell, while the lower buoy tube and boarding ramp from another individual gas cell. These two cells are automatically inflated with C02+N2gas mixture through separated inflating systems from two gas-cylinders which are fitted on the position between the upper and lower tubes.

Заранее большое спасибо!

"The inflatable life raft consists of upper & lower buoy tubes canopy arches, and floor, besides the above." ???

а именно, как это можно сказать по-русски?..

"...upper & lower buoy tubes canopy arches..." = верхняя и нижняя надувные дуги тента".

а что тогда такое canopy arches? ведь там в тексте:
"1.3 The upper buoy tube and canopy arches form an individual gas cell..."?