词汇	balloon operating
释义	balloon operating 输飞艇；氢气球操作
随便看	surface strength surface strengthening surface strengthening classification surface strengthening factor surface strengthening material surface-strengthening technique surface strengthening technology surface strengthening treatment surface strengthen layer surface strength for sand mold surface strength of investment shell surface-strength technology surface stress surface surveillance radar Surface Surveillance System surface survey surface survey equipment surface-stress surface stresses surface stresses with heterogenous distribution surface stress measurement Surface Strike Warfare surface string surface stringer surface stripe