密闭循环自携式水下呼吸器的英文

closed-circuit scuba

• 密闭:    be airtight; be he ...
• 循环:    circulate; circle; ...
• 自:    self; oneself; one ...
• 携:    carry; take along
• 式:    type; style
• 水下呼吸器:    underwater breathi ...