serviceableadj.可用的；易于服务的；有用的；耐用的serviceable hearing有用听力serviceable vehicle实用车辆serviceable conditio营运条件serviceable condition营运条件,完好状态,可使用状态serviceable locomotive运用机车serviceable government服务型政府serviceable instrument有用的器具serviceable worn uniform仍可用的旧制服serviceable equipment.可用的设备serviceable vehicle-days完好车日