diving apparatus造句怎么写

helmet-hose diving apparatus

Technical specification for high pressure reciprocating air diving apparatus

At present there are two testing devices for different kinds of diving apparatus.

Now, we may have the aid of newest diving apparatus, under, when having no heavy space, proud swim in this colour is beautiful , the benthic world that is filled with innervation and vigour, take pictures souvenir, the thing and matter that record sideswipes before you.

spherical deep diving apparatus (lowered by a cable) for underwater exploration.

Hookah type diving apparatus

diving apparatus for underwater work; has an open bottom and is supplied with compressed air.