backmount造句

• Since backmount equipment designed for travelling is readily available, there are no obvious weight advantages.
• This implies that if gas is shared in an emergency, the recipient will be breathing from a different cylinder to the donor, unlike the more usual arrangement with backmount, where both divers breathe off the same set.
• These training courses generally require the student to be already certified as a technical diver ( when crossing over from a backmount tech qualification ), or the student first learns tec sidemount as a prerequisite for completing further technical decompression training in sidemount configuration.